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Product Description
Use Hydrofarm's 7 day Digital Program Timer to water your system every day, every several days, or several times per day! The timer allows up to 8 on/off times per day, a one (1) minute minimum "on" time, and different settings for different days. The timer is a great way to keep everything on track and promote the healthy growth of your plants and flowers. It's three prong grounded, has an LCD digital display for easy operation, includes a battery backup, and has a dual outlet feature so you don't lose a plug. These timers are great for lights or hydroponic systems. Using timers to automate your hydroponic garden adds convenience and encourages productive growth of your plant. Timers allow you to provide a consistent light, nutrient, and airflow program for your garden. The battery backup assures you stay on schedule even after a power outage. Especially useful for orchid and African violet growers.
Customer Reviews
Most Helpful Customer Reviews
43 of 43 people found the following review helpful
Amazon Verified Purchase
I've only had it an hour but I'm already pleased. I have two Intermatic timers, the DT1 and the DT7, which is similar to this Hydrofarm. I outgrew the DT1, and DT7 fulfilled my needs but the buttons have gotten unresponsive to the point where it's a knock-down-drag-out fight to reprogram it or adjust anything at all, this after having it for maybe 10 years. This Hydrofarm seems to work great. Hopefully, the buttons will remain responsive.
You can set up a schedule with up to 8 separate On events and 8 separate Off events. Each single event can be for all days of the week, any one day of the week, Monday through Friday, Saturday and Sunday, all days but Sunday, Monday Wednesday Friday, Tuesday Thursday Saturday, Monday Tuesday Wednesday, Tuesday Friday Saturday. There's a random mode you can toggle to get from 2 up to 32 minutes of "random" variation.
You can override the settings. For instance, suppose right at this moment the timer when according to the schedule would be Off (meaning no power is supplied to the device plugged into it) and you decide you want it On. There's a button marked ON/AUTO/OFF. The LCD display as you keep pressing that button goes like this: On, Auto, Off, Auto, On, Auto, Off, Auto, On, etc. Thus, if I want it On right now although the programmed schedule has it normally off at this time, I press the ON/AUTO/OFF button and after seeing On in the display I press it one more time so Auto will appear in the display and it will be On and remain On until one of the scheduled events turns it Off, being the schedule taking control again. With my Intermatic DT7 due to the unresponsiveness of the buttons if I wanted to override the schedule I used to have to unplug my device from the timer and plug it into a regular outlet for the time being (if I wanted it On, or leave it unplugged if I wanted it off) and then remember to plug it back into the timer to get back on schedule. Problem solved with my new Hydromatic.
I was concerned when I found out that it has a rechargable battery in it that is not replaceable. The Intermatics each use a single AA alkaline battery, obviously replaceable, to retain settings when you remove the timer from AC power. I contacted Hydrofarm and asked about the installed battery and they contacted the vendor and replied to me by email that the internal battery is NiMH. A review here states that the battery is soldered in. It might be replaceable, I don't know, I haven't removed the 4 screws and looked inside. However, maybe the installed battery will remain good enough for many years, as long as you don't remove the timer from AC power for too long. It shouldn't need much energy to retain information and run for just a few minutes when unplugged.
It comes in a hard plastic bubble pack, but that was a pleasant surprise. I didn't have to use a knife or a scissors to remove it and risk cutting my hands with either a blade or the sharp edge of cut hard plastic. The timer, etc. popped right out with a slight twist. I wish this were more commonly done.
It can deliver a lot of power (15 amps) and the price is quite reasonable. I looked all over for 7 day timers and this one won out easily.
I scanned and used OCR software on the printed instructions (couldn't find them online), did a bit of editing to make it more clear and saved as a text file. Here is my improved version:
- - - -
DIGITAL GROUNDED 7-DAY TIMER
1. Press the reset button. (Do this if you want to erase all settings)
The reset button is the small round white recessed button on the right
side of the timer face. Use a pointed object to reach it in order to
erase all previous programming.
2. Set the clock.
HOUR: Press the clock button and simultaneously press the HOUR button
until you arrive at the correct hour. (Be aware of AM and PM hours.)
MIN: Again pressing the CLOCK button, simultaneously press the MIN
button until you arrive at the correct minute.
WEEK: Press the clock button and simultaneously press the WEEK button
until you arrive at the current day of the week.
3. Program your settings.
Each event is numbered and has a time to come on and a time to go off.
You can set 1, 2, or up to n different events using the PROG (program)
button. The PROG display will start at 1 ON. As you keep pressing the
button, the display will cycle through all the events: 1 ON, 1 OFF; 2
ON, 2 OFF; 3 ON, etc.. up to 8 OFF. For each event you must set WEEK,
HOUR, and MIN. First select which days of the week this particular event
will function (WEEK button.) As you press the button, it will cycle
through all the possibilities which include: MoTuWeThFrSaSu (everyday of
the week); Mo, Tu, We, Th, Fr, Sa, Su (each individual day of the week);
MoTuWeThFr (only week days); SaSu (only weekends); MoTuWeThFrSa; MoWeFr;
TuThSa; MoTuWe; or ThFrSa. After selecting the desired day(s) your event
will function, select the timing for the event to come on or go off
using the HOUR and MIN buttons. (Be aware of AM and PM hours.)
4. Set to automatic.
Use the ON/OFF/AUTO button to set to automatic. The button cycles
through ON, AUTO, OFF, AUTO, ON, AUTO, OFF, AUTO, ON, etc. as you keep
pushing it. If, according to the schedule you have programmed, it is
supposed to be off at that time of day (and day of the week), you cycle
it through to AUTO after cycling past OFF. If, according to the schedule
you have programmed, it is supposed to be on at that time of day, you
cycle it through to AUTO after cycling past ON. If you are using the
timer for subtle equipment like C02 and you want to test your programmed
schedule, you can try plugging in something more obvious like a light or
a fan so that you can see the changes more easily.
NOTE: Daylight Savings mode -- IF you press HOUR and MIN at the same
time you will get Daylight Savings mode which will delay your settings
by one hour automatically. This will be shown as a clock symbol over the
black dot in the right lower corner of the display. Press HOUR and MIN
simultaneously to remove the Daylight Savings mode. Random mode -- If you
press WEEK and MIN simultaneously, the display will show a O above the
clock symbol which will flash when functioning. This is random mode. The
on and off timing will be delayed by 2 up to 32 minutes randomly. This
setting is probably not useful for gardening purposes. One use of this
setting is for lights, to fool would-be burglars when you are not home.
Again press WEEK and MIN simultaneously to remove this mode.
Edit: I've had it 60 days now and I'm using almost all of the on/off events and it has been working perfectly.
Edit 2: I can't tell you how aggravating it was trying to reprogram or adjust the time on the Intermatic D7 (mentioned near the beginning of this review) once the buttons became almost totally unresponsive. Lest this Hydrofarm timer suffer the same fate, I've decided to not orient it in such a way that dust can settle into the buttons' crevices (easily managed, because the timer is plugged into a short extension cord), and in addition I have taped a piece of Saran Wrap to the front face. I can see through that and press buttons fine. These tactics will hopefully prevent most dust and dirt from reaching and penetrating the face of the device and will significantly extend its useful life.
You can set up a schedule with up to 8 separate On events and 8 separate Off events. Each single event can be for all days of the week, any one day of the week, Monday through Friday, Saturday and Sunday, all days but Sunday, Monday Wednesday Friday, Tuesday Thursday Saturday, Monday Tuesday Wednesday, Tuesday Friday Saturday. There's a random mode you can toggle to get from 2 up to 32 minutes of "random" variation.
You can override the settings. For instance, suppose right at this moment the timer when according to the schedule would be Off (meaning no power is supplied to the device plugged into it) and you decide you want it On. There's a button marked ON/AUTO/OFF. The LCD display as you keep pressing that button goes like this: On, Auto, Off, Auto, On, Auto, Off, Auto, On, etc. Thus, if I want it On right now although the programmed schedule has it normally off at this time, I press the ON/AUTO/OFF button and after seeing On in the display I press it one more time so Auto will appear in the display and it will be On and remain On until one of the scheduled events turns it Off, being the schedule taking control again. With my Intermatic DT7 due to the unresponsiveness of the buttons if I wanted to override the schedule I used to have to unplug my device from the timer and plug it into a regular outlet for the time being (if I wanted it On, or leave it unplugged if I wanted it off) and then remember to plug it back into the timer to get back on schedule. Problem solved with my new Hydromatic.
I was concerned when I found out that it has a rechargable battery in it that is not replaceable. The Intermatics each use a single AA alkaline battery, obviously replaceable, to retain settings when you remove the timer from AC power. I contacted Hydrofarm and asked about the installed battery and they contacted the vendor and replied to me by email that the internal battery is NiMH. A review here states that the battery is soldered in. It might be replaceable, I don't know, I haven't removed the 4 screws and looked inside. However, maybe the installed battery will remain good enough for many years, as long as you don't remove the timer from AC power for too long. It shouldn't need much energy to retain information and run for just a few minutes when unplugged.
It comes in a hard plastic bubble pack, but that was a pleasant surprise. I didn't have to use a knife or a scissors to remove it and risk cutting my hands with either a blade or the sharp edge of cut hard plastic. The timer, etc. popped right out with a slight twist. I wish this were more commonly done.
It can deliver a lot of power (15 amps) and the price is quite reasonable. I looked all over for 7 day timers and this one won out easily.
I scanned and used OCR software on the printed instructions (couldn't find them online), did a bit of editing to make it more clear and saved as a text file. Here is my improved version:
- - - -
DIGITAL GROUNDED 7-DAY TIMER
1. Press the reset button. (Do this if you want to erase all settings)
The reset button is the small round white recessed button on the right
side of the timer face. Use a pointed object to reach it in order to
erase all previous programming.
2. Set the clock.
HOUR: Press the clock button and simultaneously press the HOUR button
until you arrive at the correct hour. (Be aware of AM and PM hours.)
MIN: Again pressing the CLOCK button, simultaneously press the MIN
button until you arrive at the correct minute.
WEEK: Press the clock button and simultaneously press the WEEK button
until you arrive at the current day of the week.
3. Program your settings.
Each event is numbered and has a time to come on and a time to go off.
You can set 1, 2, or up to n different events using the PROG (program)
button. The PROG display will start at 1 ON. As you keep pressing the
button, the display will cycle through all the events: 1 ON, 1 OFF; 2
ON, 2 OFF; 3 ON, etc.. up to 8 OFF. For each event you must set WEEK,
HOUR, and MIN. First select which days of the week this particular event
will function (WEEK button.) As you press the button, it will cycle
through all the possibilities which include: MoTuWeThFrSaSu (everyday of
the week); Mo, Tu, We, Th, Fr, Sa, Su (each individual day of the week);
MoTuWeThFr (only week days); SaSu (only weekends); MoTuWeThFrSa; MoWeFr;
TuThSa; MoTuWe; or ThFrSa. After selecting the desired day(s) your event
will function, select the timing for the event to come on or go off
using the HOUR and MIN buttons. (Be aware of AM and PM hours.)
4. Set to automatic.
Use the ON/OFF/AUTO button to set to automatic. The button cycles
through ON, AUTO, OFF, AUTO, ON, AUTO, OFF, AUTO, ON, etc. as you keep
pushing it. If, according to the schedule you have programmed, it is
supposed to be off at that time of day (and day of the week), you cycle
it through to AUTO after cycling past OFF. If, according to the schedule
you have programmed, it is supposed to be on at that time of day, you
cycle it through to AUTO after cycling past ON. If you are using the
timer for subtle equipment like C02 and you want to test your programmed
schedule, you can try plugging in something more obvious like a light or
a fan so that you can see the changes more easily.
NOTE: Daylight Savings mode -- IF you press HOUR and MIN at the same
time you will get Daylight Savings mode which will delay your settings
by one hour automatically. This will be shown as a clock symbol over the
black dot in the right lower corner of the display. Press HOUR and MIN
simultaneously to remove the Daylight Savings mode. Random mode -- If you
press WEEK and MIN simultaneously, the display will show a O above the
clock symbol which will flash when functioning. This is random mode. The
on and off timing will be delayed by 2 up to 32 minutes randomly. This
setting is probably not useful for gardening purposes. One use of this
setting is for lights, to fool would-be burglars when you are not home.
Again press WEEK and MIN simultaneously to remove this mode.
Edit: I've had it 60 days now and I'm using almost all of the on/off events and it has been working perfectly.
Edit 2: I can't tell you how aggravating it was trying to reprogram or adjust the time on the Intermatic D7 (mentioned near the beginning of this review) once the buttons became almost totally unresponsive. Lest this Hydrofarm timer suffer the same fate, I've decided to not orient it in such a way that dust can settle into the buttons' crevices (easily managed, because the timer is plugged into a short extension cord), and in addition I have taped a piece of Saran Wrap to the front face. I can see through that and press buttons fine. These tactics will hopefully prevent most dust and dirt from reaching and penetrating the face of the device and will significantly extend its useful life.
11 of 11 people found the following review helpful
Amazon Verified Purchase
I bought the dual digital timer for my two cat feeders. Since my cat feeders have their own portion size controller, I didn't mind not having the seconds control. I chose this for the good reviews and the built in rechargeable battery. I knew buying this product I could face a difficult time programming the timer. Setting up the clock was the easiest part. Setting up the timer was doable after a few passes through the instruction guide. Understanding the On/Auto/Off mode was impossible. I did a search on the internet and found an easier to understand instruction guide for the same product but different model number (Chicago Electric Model 95205). Apparently that set of instructions was 5 pages long versus this skimpy set of instructions. I guess the company wanted to cut down on the cost. I wrote out a simpler version for myself that I would like to share. This is actually an easy timer to setup but the instructions that came with it doesn't do it justice.
1. Before using the digital timer, plug it in for 15 minutes to allow for the internal battery to charge. After recharging, press the R button to reset the unit.
Setting the Clock
2. Set the Hour: Press the CLOCK and HOUR buttons to set the hours (watch out for AM and PM).
3. Set the Minutes: Press the CLOCK and the MIN buttons to set the minutes.
4. Set the Day of the Week: Press the CLOCK and the WEEK buttons. The display will scroll through each day of the week.
Setting the Timer
5. To set the Digital Timer to turn ON: Press PROG to begin. The timer will display "1 ON"/ Press HOUR, MIN, and WEEK to set the hour, minute and day of the week you want the Digital Timer to activate.
6. To set the Digital Timer to turn OFF: Press PROG again. "1 OFF" will be displayed. Press HOUR, MIN, and WEEK to set the hour, minute and day of the week you want the Digital Timer to turn OFF.
7. To undo a setting, or go back to a previous setting: Press R which will cancel the current set time. Pressing R again will bring you back to the previous setting on the Digital Timer.
Using the On/Auto/Off Mode
8. The LCD readout will indicate if you are in the On, Auto, or Off stage of the program.
9. Pressing the "ON/AUTO/OFF" button to the ON setting will set the Timer to turn ON for an appliance. It will not turn OFF the appliance.
10. Pressing the "ON/AUTO/OFF" button to the AUTO setting will set the Timer to turn ON and OFF at selected intervals.
11. Pressing the "ON/AUTO/OFF" button to the OFF setting will turn the Timer OFF.
Options for Setting Day(s) of the Week (Use with Setting the Timer)
12. To set the Timer to go on DAILY: Press WEEK once. The display will show Mo-Tu-We-Th-Fr-Sa-Su.
13. To set the Timer for one specific day: Press WEEK two times until the desired day of the week shows.
14. To set the Timer for Monday through Friday: Press WEEK until the display shows Mo-Tu-We-Th-Fr.
15. For Saturday and Sunday only: Press WEEK until Sa-Su shows.
16. For Monday through Saturday (Sunday excluded): Press WEEK until Mo-Tu-We-Th-Fr-Sa shows.
17. For Monday-Wednesday-Friday only: Press WEEK until Mo-We-Fr show.
18. Etc.
19. Press R at any point to cancel the current setting. Pressing R again will take you back to the previous option.
1. Before using the digital timer, plug it in for 15 minutes to allow for the internal battery to charge. After recharging, press the R button to reset the unit.
Setting the Clock
2. Set the Hour: Press the CLOCK and HOUR buttons to set the hours (watch out for AM and PM).
3. Set the Minutes: Press the CLOCK and the MIN buttons to set the minutes.
4. Set the Day of the Week: Press the CLOCK and the WEEK buttons. The display will scroll through each day of the week.
Setting the Timer
5. To set the Digital Timer to turn ON: Press PROG to begin. The timer will display "1 ON"/ Press HOUR, MIN, and WEEK to set the hour, minute and day of the week you want the Digital Timer to activate.
6. To set the Digital Timer to turn OFF: Press PROG again. "1 OFF" will be displayed. Press HOUR, MIN, and WEEK to set the hour, minute and day of the week you want the Digital Timer to turn OFF.
7. To undo a setting, or go back to a previous setting: Press R which will cancel the current set time. Pressing R again will bring you back to the previous setting on the Digital Timer.
Using the On/Auto/Off Mode
8. The LCD readout will indicate if you are in the On, Auto, or Off stage of the program.
9. Pressing the "ON/AUTO/OFF" button to the ON setting will set the Timer to turn ON for an appliance. It will not turn OFF the appliance.
10. Pressing the "ON/AUTO/OFF" button to the AUTO setting will set the Timer to turn ON and OFF at selected intervals.
11. Pressing the "ON/AUTO/OFF" button to the OFF setting will turn the Timer OFF.
Options for Setting Day(s) of the Week (Use with Setting the Timer)
12. To set the Timer to go on DAILY: Press WEEK once. The display will show Mo-Tu-We-Th-Fr-Sa-Su.
13. To set the Timer for one specific day: Press WEEK two times until the desired day of the week shows.
14. To set the Timer for Monday through Friday: Press WEEK until the display shows Mo-Tu-We-Th-Fr.
15. For Saturday and Sunday only: Press WEEK until Sa-Su shows.
16. For Monday through Saturday (Sunday excluded): Press WEEK until Mo-Tu-We-Th-Fr-Sa shows.
17. For Monday-Wednesday-Friday only: Press WEEK until Mo-We-Fr show.
18. Etc.
19. Press R at any point to cancel the current setting. Pressing R again will take you back to the previous option.
12 of 13 people found the following review helpful
Amazon Verified Purchase
You can't really see it in the picture or the product description, but there are two outlets on this timer. You can, for example, plug in both the grow light and the heat mat in your seed starting set-up. They're linked, though, so you can't have them turn on and off at different times.
The instructions, in all their 6-point-font glory, do little to illuminate a rather poorly designed interface. Figuring out how to do a very simple program took a long, long time. However, since one of the things plugged into my timer is a light, i know that it works perfectly if you set it up properly.
This timer allows a staggering combination of schedules. You can have up to eight different programs, which can each be on any or all days of the week. (I haven't yet tested what happens if schedules conflict. For example, you have one program that says to turn the light on at 8am on monday and off at 2pm, but another that says to turn the light on at 9am every day and off at noon, what happens on monday?)
The instructions, in all their 6-point-font glory, do little to illuminate a rather poorly designed interface. Figuring out how to do a very simple program took a long, long time. However, since one of the things plugged into my timer is a light, i know that it works perfectly if you set it up properly.
This timer allows a staggering combination of schedules. You can have up to eight different programs, which can each be on any or all days of the week. (I haven't yet tested what happens if schedules conflict. For example, you have one program that says to turn the light on at 8am on monday and off at 2pm, but another that says to turn the light on at 9am every day and off at noon, what happens on monday?)
Most Recent Customer Reviews
Can't do seconds, only minutes
This timer works well but is limited in its flexibility. I use it to control an automatic dog feeder and to get the correct amount of food, I need to be able to program minutes AND... Read more
Published 6 days ago by Twila Davis Reed
$10 at Harbor Freight
Just an FYI... For the exact same product. It fluctuates between 10 and 12 bucks depending on the sale. Plus, they always have 20% off coupons available...
Published 23 days ago by J. Glasgow
Doesn't keep time accurately
I own three of these, all purchased at different times over the course of two years. I have recently realized that NONE of them keep the correct time. Read more
Published 26 days ago by Koala
stopped working TWICE
So there are other reviews about confusing directions, I did not fid it hard to program but it just randomly stopped working one day. Read more
Published 29 days ago by johnnyoak
2 months strong
Works for me. It's been going for 2 months now and I haven't had a single issue with it. Love the daylight savings time feature.
Published 1 month ago by Carlos Vidal Marcelino
Great little timer!
If you are needing a small wattage (15amps max) timer you would be hard pressed to do better than these little gems. Read more
Published 1 month ago by rlucas50
Woefully inadequate setup instructions
You are pretty much on your own when it comes to programming this timer. I don't want to admit how long it took me to get it going by trial and error. Read more
Published 2 months ago by Eugene A. Lindsey
INEXPENSIVE, EASY TO PROGRAM!!
I purchased this timer to run the misting system on a reptile enclosure. Programming was easy and the unit has performed flawlessly for over two months now. Read more
Published 3 months ago by Lungfixer
works like a charm
this timer is awesome...it has multiple settings for time increments or a random setting. it works flawlessly for the HID lamp growing my flowers. Read more
Published 3 months ago by craig regs
Im glad I waited
Just as the person who gave this 2 stars, the same thing happened to me. The timer does not turn on and off anymore. Read more
Published 3 months ago by Mike Biggar
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