|Item Weight||12 ounces|
|Product Dimensions||6.2 x 5.6 x 3.1 inches|
|Item model number||4841DATSEN|
|Manufacturer Part Number||4841DATSEN|
Master Lock 4841DATSEN Auto Sentry Wireless Anti-Theft Vehicle Alarm System
|Price:||$112.25 & FREE Shipping. Details|
- Enter your model number to make sure this fits.
- Detects shock, glass break, and voltage drop, Siren mounts anywhere under the hood with double-sided tape
- Alarm attaches to battery terminal and sensor plugs into VPA or accessory socket
- Protects your vehicle and its contents, pressure sensor detects unauthorized vehicle entry into passenger compartment of cars and trucks
- Installs easily in minutes with no tools or splicing, no wires to cut
- 110 decibel alarm siren and includes 2 fobs
Customers Who Viewed This Item Also Viewed
Top Customer Reviews
i went to a well known professional installer and was told that Mercedes are very difficult to install alarm systems on, usually taking abut 6 hours. I was told that Mercedes might have an add on module that allow me to use my current key fob opener. I check with Mercedes and they didn't seem to know what i was taking about, but found a Codalarm unit that was supposed to work (approx $600 installed).
I saw this Master Lock and decide to give it a try. It was fairly easy to install even though my battery not under the hood, and although i have to use the extra key remote, it works well in providing an attention getting alarm with any tampering which is what i needed. My vehicle may have been difficult to steal, but now it is also difficult to enter or tamper with even if an expert can bypass my factory security. With about a 20 minute installation, the product is a great, cheap addition without the worry of having your vehicle computer system ruined by a bad installation of a fancier system.
I also looked at the Bull Dog systems at a parts store, but they were given poor reviews and have been happy with this model so far.
I see the "installer" gets blamed for not setting the side screw for the inside vehicle pressure switch,----*not valid here. Here's my experience:
I went to the "Masterlock" web sight for support and could not find this unit anywhere. The special URL under the products name in the instructions redirects to their main sight, and searching produces irrelevant hits (there or anywhere).
I went there per the instructions for the "adjustment" instructions. (Adjustments?, there's only one documented.)
The third party "reviews", or "help" only comment to turn the screw on the pressure sensor clock wise for more "sensitive" setting. It arrived all the way in and did not "Alarm". I sat in the Vehicle, "Armed", and actually so tight, my ear and hair on the Drivers Door side got that "swoosh" from normal door opening, and did not "Alarm" on full "Sensitivity".
I had a Volt Meter attached, and with significant drop, no "Alarm".
The "bump" alarm did work.
However, as describe here from others, with a *hard door slam -- I mean with more force needed then to simply close the door -- the vehicle did have to visibly move with a jolt to sound. So yes a "tap" (?, define "tap") would set it off.
No instruction on how *long it would alarm, so was concerned it may *drain my battery, since *all 3rd party input said the only way to stop it was to use the remote or pull the Fuse (or add a switch?, I'd guess). I don't live in an area that I could sit with it "Alarming" to see how long or if it would "time out" (?).Read more ›
Most Recent Customer Reviews
It would be nice to be able to find some kind of information on this but good luck.not even the manufacturer has any because it's a discontinued item. Read morePublished 8 months ago by Amazon Customer
Have two of them. One installed in my 2014 Chevy Silverado, second installed in my 2014 Can Am Spyder. Works great. Have had these on previously owned vehicles, easy to transfer. Read morePublished 14 months ago by John
great price,easy set up.would order another but price almost doubled.Published 23 months ago by BUD
This was installed in a Mercedes Benz C 350. Very easy to install just 2 wires. Alarm sounds if door, trunk, hood are opend, and if someone tampers with out side of car. Read morePublished on February 25, 2014 by Louis J. Deglomini
FOR THE PRICE YOU CAN NOT BEAT IT. IT IS ADJUSTABLE AND IS EASY TO DO. HAVING USED IT FOR ABOUT A MONTH I HAVE FOUND NO FLAWS IN IT.Published on September 22, 2013 by vern mcgill