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  • TII 212 Broadband Cable TV Lightning Surge Protector
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TII 212 Broadband Cable TV Lightning Surge Protector

by TII
147 customer reviews
| 26 answered questions

List Price: $21.99
Price: $19.83 & FREE Shipping on orders over $35. Details
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Sold by cableTVamps and Fulfilled by Amazon. Gift-wrap available.
  • 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.

Did you know surge protectors wear out over time?

Check out the Surge Protectors Buying Guide to learn how surge protectors keep your devices safe.

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$19.83 & FREE Shipping on orders over $35. Details In Stock. Sold by cableTVamps and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

TII 212 Broadband Cable TV Lightning Surge Protector + APC PNET1GB ProtectNet Standalone Surge Protector for 10/100/1000 Base - T Ethernet Lines
Price for both: $38.26

Buy the selected items together

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Technical Details

  • Brand Name: TII

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.

Product Details

  • Item Weight: 2.9 ounces
  • Shipping Weight: 3.2 ounces (View shipping rates and policies)
  • ASIN: B0016AIYU6
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (147 customer reviews)
  • Amazon Best Sellers Rank:
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: March 20, 2008

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

93 of 93 people found the following review helpful By Rich H. on June 8, 2011
Verified Purchase
This review is a bit speculative, because afaik there's only one way to know whether it actually works, and I'd rather not take a lightning strike to find out...

The product came well recommended, and looks to offer excellent value for the price. It fit perfectly in place of the F-F grounding coupling in the entry box; installation took all of five minutes. Service was unaffected after installation; saw no significant signal loss per my DVR's diagnostic screen. Internet access and speed were unaffected.

The reason I'm not awarding five stars is a rather nasty surprise I received when reading the instruction booklet: it specifies use only with RG59 cable. It was in fact adamant on this point, specifying adapters (not included) on each side for use with RG6. The product description claims "It is specifically designed for todays Broadband signals carried over the coax cables." I know of no modern cable application that still uses RG59, including my own. I did not use adapters; have no idea what the implications are, but hoping it isn't a safety issue. Either way, this does not inspire 100% confidence in the product. At the very least, this limitation should be made clear in the product description.

So, five stars for the unit itself, minus one for the incomplete product description.
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29 of 30 people found the following review helpful By Chad Anderson on November 17, 2010
Verified Purchase
I ordered two of these after I ditched my cable TV for a rooftop antenna but kept my cable internet. They look very well-made and are heavier than they look (not hollow). Installation wasn't hard--you just screw on the coaxial ends and make sure it's grounded well. I grounded them by wire using the hole and screw that is in each product. I can't say how well it works because lightning hasn't struck my house yet, but I bought it because it's the only UL listed surge protector that's this type (not the kind you plug in the wall). Antenna signal strength is diminished, but it's only noticeable when you actually scan for signal strength because all of the channels that I get are digital. I have 20 Mbps cable internet and it still runs at full-speed.
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18 of 20 people found the following review helpful By G. Stahl on November 27, 2010
Verified Purchase
I've been in the custom audio/video industry for 17 years and have been using surge protectors the whole time. The most common complaint with a product like this is that it degrades the signal in some way.

Most CATV surge protectors are built into other surge protectors so I liked the idea of an independant unit like this. I have now used it for several months and not noticed any degradation in the signal at all. The signal I am referring to is a TV antenna being used for TV channels (digital) and FM stations (analog and digital). All my TV stations are coming thru without issues and all my FM stations are as well.

I also like the provisions for mounting the device on a board and easy grounding. Its surprising how many products overlook these simple features.

I have not had any surges so I cannot comment on this product's surge protection prowess.
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13 of 15 people found the following review helpful By C. Siano 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.
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9 of 11 people found the following review helpful By Bill on January 9, 2012
From reading on Amazon.com reviews and other sources on the Internet this seems like a quality surge protector. It just arrived from another source and looking at it, it's very sturdy and not cheap. Of course, one never knows exactly how well a surge protector is working, but based on the appearance, technical specs. and reviews it looks to be excellent.

Some reviewers had problems fitting RG6/U cable to the terminals as the hole was too small and they said it seemed to be made for RG59/U cable. I did not have that problem. The holes in the terminals were very adequate for my RG6/U cable on the one I received.

As another reviewer said, "If your cable fits into the surge protector, you are probably ok." My RG6/U cable fit perfectly. Maybe there are different models with different hole sizes for cable, I don't know, I'm just posting my experience with this surge protector which was excellent. If you receive instructions with your surge protector that says it will not fit RG6/U cable, go with the instructions, not my comments.
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