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212 Broadband Cable TV and Satellite Lightning Surge Protector 75 Ohm 5-1500MHz, Modem

4.5 4.5 out of 5 stars 1,066 ratings
Currently unavailable.
We don't know when or if this item will be back in stock.
Brand TII
Connector Type F Type
Cable Type Coaxial
Compatible Devices Modem
Special Feature UL Listed

About this item

  • Protects expensive HDTV receivers, DVRs, cable modems, etc. from potentially damaging surges.
  • Unique In-Line design is virtually transparent to all analog or digital signals from DC to 1GHz.
  • Provides superior protection against high and low voltage transient surges.
  • Protection element is designed to reset after each surge event, with a service life of up to 1500 surges.
  • 5-year warranty when purchased from an Authorized TII Dealer. Warranty not valid when purchased through other outlets.
Note: Products with electrical plugs are designed for use in the US. Outlets and voltage differ internationally and this product may require an adapter or converter for use in your destination. Please check compatibility before purchasing.

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TII 212 Broadband Cable TV and Satellite Lightning Surge Protector 75 Ohm 5-1500MHz, Modem

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Product Description

If you want to protect your expensive home theater from lightning and other outside surges that come over the cable TV line, then this is what you need. TIIs cutting edge In-Line Coaxial Lightning Surge Protectors protect personnel and customer equipment, e.g. Televisions, Cable Set Top Boxes and Cable Modems from lightning and power induced surges on coaxial cables. It is specifically designed for todays Broadband signals carried over the coax cables.

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Customer reviews

4.5 out of 5 stars
1,066 global ratings

Customers say

Customers like the quality, ease of installation, performance, value, appearance and connectivity of the electronic cable. For example, they mention it's well made, easy to install and works well. Some appreciate the appearance and connection. That said, opinions are mixed on signal quality and speed.

AI-generated from the text of customer reviews

Select to learn more
QualityEase of installationPerformanceValueConnectivityAppearanceSignal qualitySpeed
116 customers mention "Quality"112 positive4 negative

Customers are satisfied with the quality of the electronic cable. They mention that it is well-made, has good chrome plating, and is designed to take a hit. It protects from surges from both the shield and the center conductor. Some say that it has stood up to harsh weather.

"...I ordered this and installed it today. It's significantly more substantial than what was installed at the demarc by the provider...." Read more

"...It protects surge from both the shield AND the center conductor. The standard 'block' does not protect the center conductor...." Read more

"...Installation is easy and straight forward. Quality of this product looks and feels good. Been using this for a few days without any issues...." Read more

"...These are solidly built. I performed signal analysis before and after installing and there was no degradation in signal, which I was worried about...." Read more

94 customers mention "Ease of installation"89 positive5 negative

Customers find the installation of the electronic cable pretty easy and straightforward. They appreciate the clear installation document and instructions. They also mention that the grounding process is easy and takes about 5 minutes to change out.

"Easy to understand and install." Read more

"...In practice, I found the device easy to install, create minimal interference, and resulted in a piece of mind that I'd done all I could to protect..." Read more

"...Installation is easy and straight forward. Quality of this product looks and feels good. Been using this for a few days without any issues...." Read more

"...It installed quickly and easily...." Read more

68 customers mention "Performance"54 positive14 negative

Customers like the performance of the cable. For example, they say it's working well, has good quality, and is constructed well. Some mention that the service was unaffected after installation and that all TV stations are coming through without issues.

"...TV still works good.- As of today, it's exposed to the elements on an exterior brick wall...." Read more

"...Service was unaffected after installation; saw no significant signal loss per my DVR's diagnostic screen...." Read more

"Put this on my incoming comcast line - no issues with TV and no drop in internet speed...." Read more

"...All my TV stations are coming thru without issues and all my FM stations are as well...." Read more

48 customers mention "Value"40 positive8 negative

Customers like the value of the electronic cable. They say it's easy to install, provides peace of mind, and is a small price to pay to protect HDTVs, cable boxes, and other valuable equipment. Some mention that it has a hefty ground lug and is easy to protect valuable equipment attached to your antenna.

"...in case of a lightning strike to the antenna mast, protecting your valuable equipment...." Read more

"...Well worth $17 and 30-minutes!Really appreciate the other reviews & the people who took the time to answer questions." Read more

"...Unit is reasonable priced & is probably useful to have in case of lightning strike or even static charges on line...." Read more

"...The product came well recommended, and looks to offer excellent value for the price...." Read more

15 customers mention "Connectivity"12 positive3 negative

Customers like the connectivity of the cable. They mention that it works well with cable television Internet service, RG6 cable, and RG59. It's easy to mount and works great for outdoor TV antennas. It has a place to connect a heavy ground wire.

"Installed 2months ago, cable internet works well without any degradation in performance." Read more

"Awesome product. It is perfect for my cable television Internet service and was easy to install...." Read more

"...Maybe having one will prevent that from happening. It comes with cable connections and screws to mount it and is marked which is the in and output..." Read more

"...I received when reading the instruction booklet: it specifies use only with RG59 cable...." Read more

14 customers mention "Appearance"14 positive0 negative

Customers are satisfied with the appearance of the surge protector. They mention that it has a shiny clean exterior and is well made. Some appreciate the good chrome plating that protects it.

"...It looks good, was pretty easy to install, and my cable TV and internet seem to be working fine...." Read more

"...cars with their chrome finish trimmings, then you will like the shiny clean exterior of this surge protector...." Read more

"...3. Looks great in my Cable box, and supports broadband speeds up to 1.5 Ghz; Very few households have broadband speeds above that." Read more

"...copper wire. Product seems well made and seems to have good chrome plating to protect it, I did install this in an elec...." Read more

71 customers mention "Signal quality"43 positive28 negative

Customers are mixed about the signal quality of the electronic cable. Some mention that it doesn't seem to affect the signal, while others say that it diminishes the antenna signal strength.

"...In practice, I found the device easy to install, create minimal interference, and resulted in a piece of mind that I'd done all I could to protect..." Read more

"...Two days ago the entire signal went dead and I found it came from this device. I thought it was broken so I tried to find a warranty...." Read more

"...was 1.2 GBps before and after installing, and there was no loss on my OTA TV signals, even the edge stations.I would recommend...." Read more

"...Service was unaffected after installation; saw no significant signal loss per my DVR's diagnostic screen...." Read more

26 customers mention "Speed"18 positive8 negative

Customers are mixed about the speed of the cable. Some mention that it did not affect their throughput speeds, while others say that it slows down their internet speed.

"...Internet access and speed were unaffected...." Read more

"...(in a pleasant way) when I finally installed it, the speeds actually are tripled. This is not a joke...." Read more

"...turns change in direction of the ground wire - this can delay the suppressor from activating, I not going into details on this aspect." Read more

"Put this on my incoming comcast line - no issues with TV and no drop in internet speed...." Read more

A little insurance policy for all your expensive electronics
5 out of 5 stars
A little insurance policy for all your expensive electronics
Coaxial surge protector that fits and hope to never know if it actually works.I have an OTA that is 45 feet up on a radio tower, so it's just a matter of time before I get a direct lightning hit because of my situation.* I specifically bought this one because of the ability to mount it with the grounding block* I ran RG 11 cable 400ft QUAD SHIELD RG-11 Direct Burial Underground with Floodant Solid Core Coaxial Cable 3Ghz 14AWG 75 Ohm UV RESISTANT PVC JACKET Outdoor Application RoHS Compliant Lower Signal Loss Over RG7 into a F connector end pieces that down sizes the wire PPC RG11 Coax Compression Connectors Qty of 25: EX11N716WS with AquaTight Seal for Quad Shield, PE, and PVC jacket Coaxial Series Cable* 10 Gauge grounding wire was connected from the grounding screw into a grounding block 3 GHz Ground Block - Dual/Twin/Two Port, High Frequency With Weather Seal Boots for Coax (Coaxial) Cable, F Type approved for Antenna, Dish Network, DIRECTV, Comcast, CATV, and more - 2 Ports and then that was attached to an ground rod that was put 7 1/2 feet into the ground.***There are lots of people that are complaining that this surge protector is not made for RG6 or RG11 cables. My cables fit and the F conectors screwed right on, so at this point I don't see an issue****This protection is better than no protection at all*
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Top reviews from the United States

Robin fisher
5.0 out of 5 stars Coaxial surge protector
Reviewed in the United States on July 29, 2024
Verified Purchase
This item is a must when installing an antenna for over the air purposes. It has a port for a 10 gauge ground wire necessary for surge protection in case of a lightning strike to the antenna mast, protecting your valuable equipment. Even though lightning strikes are rare, but can happen, its piece of mind that it will function as needed should the ultimate happen.
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John
5.0 out of 5 stars Better than what the cable company installed
Reviewed in the United States on July 19, 2024
Verified Purchase
After my cable modem got fried last week during a storm, I was suspect of the bonding on the incoming coax. I ordered this and installed it today. It's significantly more substantial than what was installed at the demarc by the provider. It's in place and I verified the connection to ground. Hopefully this will prevent future damage.
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every bit RED
5.0 out of 5 stars Ground connection for outdoor antenna.
Reviewed in the United States on July 31, 2024
Verified Purchase
Easy to understand and install.
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RobC
4.0 out of 5 stars Some info that you might not otherwise know that is important if you have an issue!
Reviewed in the United States on April 27, 2020
Verified Purchase
I have had this as a protection for my downstream from the antenna system that includes 3 HDHomerun units for two years now. Two days ago the entire signal went dead and I found it came from this device. I thought it was broken so I tried to find a warranty. Despite what is said in the listing, there is effectively no warranty, so forget trying to get it replaced.

However! I thought about the reset function. This is supposed to happen automatically so I assumed that if it is dead it is because it is really dead because otherwise it would have reset, right? I thought about that and this morning I tried connecting it again. Hey! It worked! So it seems that at least in SOME cases (mine for instance) you need to remove the cables in and out of this and MAYBE wait some time and reinstall the cables and it might work. I wish I had put it back together immediately to see if the removal of the coax connectors on both ends "hard" reset it when it does not "auto" reset if there is any meaning to auto reset at all! I mean, how many times are you aware of an overload so you can debug this? So I thought to share this with you all in case you are searching for RESET in the reviews ;-)

Some other stuff. I have this grounded to a steel bar. If you do not properly ground this thing with the shortest possible wire (use a heavy gauge too) to a proper ground, then it will have much less chance of saving your stuff (which it did in my last case! ALL my stuff is fine! so it DOES work) and then there is another issue that some reviewers missed:

If you have, as I do, a LAN ethernet connection from my downstream gizmos, then you should consider that ethernet cables MOST CERTAINLY DO transfer overloads. 100%. So buy ethernet protection devices and install them in appropriate places to avoid the double whammy of coax and ethernet overload. Don't depend on this surge protector alone.

Just sharing my experiences for you all!
13 people found this helpful
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Matt S
5.0 out of 5 stars Should work if needed
Reviewed in the United States on April 23, 2024
Verified Purchase
This is one of those things you never know if it's working. It's just insurance againt the many lighting strikes in my area. I haven't noticed any internet degredation with 1 gig speed.
One person found this helpful
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drband
5.0 out of 5 stars great value!
Reviewed in the United States on November 20, 2023
Verified Purchase
The device came in a sealed poly bag-- brand new condition-- with 2 screws for mounting in the cable box after connecting (recommended). Worked with RG-6 cabling which has an18AWG center wire--no problem. This TII 212 unit looks exactly like the Siemens FSCATV surge device which sells for $70 approx.

I think this one is actually the same device and Siemens puts their sticker on and marks up the price. Time will tell if it is effective as a CATV surge protector. No way to test it except to use it!

Internet speeds and CATV seem to be unaffected and just as zippy as usual. It's a win for $15!
2 people found this helpful
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NG
5.0 out of 5 stars Works great, no side effects
Reviewed in the United States on May 2, 2024
Verified Purchase
Installed 2months ago, cable internet works well without any degradation in performance.
4 people found this helpful
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C. Siano
5.0 out of 5 stars Far superior to the "block" used by most
Reviewed in the United States on October 10, 2013
Verified Purchase
First off, I did some research on this device long before I purchased it. The data sheet from the manufacturer is available here:

tiinetworktechnologies<dot>com/repository/datasheetlibrary/NYMDS036-0710<dot>pdf

Installation instructions are here:

tiinetworktechnologies<dot>com/repository/installationsheetlibrary/92219901-tii_210&212_InstNt<dot>pdf

(replace the <dot> with a period to complete the URL.)

It should be noted that there is a shock hazard if this device is not installed inside a listed indoor/outdoor enclosure. This does not say it won't work, only that you might be exposing yourself to a shock hazard. I simply installed the block in a protected location that is out of the direct weather and not likely to be touched by humans (on a joist under a covered porch).

Three very important characteristics apply to this device:

1) It protects surge from both the shield AND the center conductor. The standard 'block' does not protect the center conductor.

2) Automatically resets. A couple other devices on the market will shunt to ground, but then are done. While the amount of energy dissipated matters (see the data sheet), this device can reset and provide service more than once.

3) Can conduct power. If you use a pre-amp on your antenna or your cable service needs a powered feed to the distribution box, that power will still flow through the coax and this device.

It should be noted that the specifications do indicate a signal loss of roughly 0.2db (they guarantee < 0.3), so some signal will be lost from this device. However, this loss is minimal, and typically less than many cable to cable couplers will cause.

Of course, there is no way to determine if the product works unless I get an electrical spike, but short of erecting a dedicated lighting rod, this is about the best you can get.

In practice, I found the device easy to install, create minimal interference, and resulted in a piece of mind that I'd done all I could to protect my investment.
45 people found this helpful
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