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  • Sentry Wireless Headphones Black Clam Pack - Sentry HO800
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Sentry Wireless Headphones Black Clam Pack - Sentry HO800

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  • A New Level of Freedom, WOrks Through Walls & Doors
  • All Cables Included, Signal-Lock Transmitter,
  • Adjustable Headband
Currently unavailable. We don't know when or if this item will be back in stock.

Technical Details

  • works through walls
  • powerfull transmiter

Product Description

Sentry Wireless Headphones Black Clam Pack - Sentry HO800.

Product Details

  • Item Weight: 3 pounds
  • Shipping Weight: 1 pounds
  • ASIN: B000TXRJMK
  • Item model number: HO800
  • Average Customer Review: 3.5 out of 5 stars  See all reviews (62 customer reviews)
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: July 19, 2007

Customer Questions & Answers

Customer Reviews

Sound quality is excellent.
Thombar
I have you that I used for years and it is still working fine.
zebors
Tested with battery in transmitter.
Ronald F. Ranc

Most Helpful Customer Reviews

18 of 19 people found the following review helpful By MikeA on April 6, 2009
The Cons:
Entire set seems made of plastic and has a very non-sturdy "feel".
49.87Mhz operation. This is bound to pick up interference and hurt the range.
Requires one 9-VDC for transmitter and two AAA's for headset.
No AC "Wall Wart" provided. (9-vdc 200Ma neg sleeve hot tip.)

The Pros:
THEY ARE CHEAP!
THEY WORK!
AC power pin provided if you have an AC power supply.

Comments:
Okay, It is weird that Sentry didn't include a 9-vdc AC adapter. But the 200MA supply is cheap and easy to find. I had a couple laying around. I had a charger I used for AA Camera batteries so I bought a package of 4 rechargeable batteries when I bought the Headphones. Power supply solved!

I bought these to monitor source and recordings from Guitar that is routed through a USB Audio Interface on my computer. I sit maybe 6' from the transmitter. I have NO PROBLEMS with "range <smile>. There is no significant buzz from interference when utilized for the purpose for which I purchased these headphones. Frequency response is not specified in any of the documentation included but it is adequate for my needs.

I have this setup in my basement in between two computers (one laptop and one desktop). My network is cabled Ethernet (no wireless equipment at all). In addition to the two computers, I have three guitar amps, mixing board and a bunch of other electrical crap plugged in and usually "on". So Interference is not a huge issue in my setup...especially when sitting close to the transmitter.

Just out of curiosity, I fired up some Joe Walsh and took the headphones upstairs to the main level (out of the basement). There were spots where interference was definitely a problem.
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9 of 9 people found the following review helpful By Andy on May 30, 2008
I thought these would work for 20-30 feet or so, but I can use them all around my house without any major interference. I say "major" because when I stand in a certain spot (and I have to try to), it cuts out, but if I shift a little, it's fine.
The tone quality is pretty good considering the price; sometimes there's good bass on it, sometimes there's not. I would recommend this to anyone that isn't tech-savvy - they're pretty easy to set up and use. One downside is that the transmitter runs on a 9-volt. It can be plugged in to the wall, but that cord isn't provided.
The only time there's static is when I turn the volume on the headphone all the way up, but I never need to do that - it's clear as a bell!
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8 of 8 people found the following review helpful By Kylan French on November 8, 2008
Hey, i love them. They work over 100 ft. I put the transmitter in my backpack, put my backpack on and then i ride my bike. The headphones use 2 AAA battery's and one 9volt. I love then!
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5 of 5 people found the following review helpful By Karen on January 2, 2012
I like to watch scary movies after my kids go to bed, and sometimes they can still hear the loud parts of the movies, so I went looking for wireless headphones I could use. I saw a number of negative reviews for these, so I was very wary of purchasing them (I bought a 2-pack for $30), but figured I could always return them if they didn't work... Well, I LOVE them.

I don't know if electronic components make a difference, but I have an entertainment center with a Vizio TV, AT&T U-Verse cable box and DVD/VCR player all in close proximity to each other. I am a NON-NON-NON-technical person when it comes to electronic equipment hookups - I was happy to see a quickstart guide that was only one page! The headphones require 2 "AAA" batteries, and the transmitter requires 1 9-volt battery (or you can buy an adapter). I put the transmitter next to the TV and plugged the RCA adapter into the red/white audio outputs on the back of my AT&T U-Verse cable box, and it works beautifully! Using the TV remote, I turn the volume all the way down on the TV and control the volume on the headset. All of this took about 5 minutes. It took me longer to cut the headphones out of their plastic packaging! I don't have any noise (humming, buzzing, etc.) AT ALL. It sounds exactly the same as when I'm listening to the TV regularly. Now - I do have a receiver with surround sound and 6 speakers - of course, these headphones DO NOT sound like THAT system.

I am sure that if you have a very discriminating sense of hearing, or are very particular about how your movies sound, then these may not work for you. But for someone who simply wants to watch TV without disturbing anyone, then these are terrific!

Oh, and I thought the "2-pack" meant that there would be 1 transmitter and 2 headphones - but it was 2 transmitters and 2 headphones, so we can use the other set in the playroom for our game TV.
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4 of 4 people found the following review helpful By Peter A. Ghiloni on March 24, 2009
I am delighted with these wireless headphones. Hard to beat their performance at any price. Absolutely no background (ambient noise) when no sound signal is being transmitted. Sound quality is great and responds well to bass, mid-range, treble, etc. settings on the sound source electronics. The fit of any headphone is a matter of personal preference not of price. The fit and comfort for me are excellent.

An important comment on one of the previously published 1 Star reviews offering my opinion only to help a prospective buyer of these headphones.

RE: PUBLISHED 1 STAR REVIEW EXCERPT: "My 12V (standard plug) transformer gives a nice spark when I plug it in. Apparently their 12V receptacle is a little off standard geometry ....(also).... The 9v battery 'plug' is just a little off ...of standard geometry. No sound at all"

MY COMMENT: The power jack and 9v battery 'plug' on the transmitter of these headphones conform to international standards used by millions of products. The jack is internal pin positive and external sleeve negative. The only way 'a nice spark' can occur is to use a plug that is internal pin negative and external sleeve positive. Both arrangements are standard. The plug configuration of both of these standards are the same. Make sure that attention is paid to this if external power is to be used. Given 'a nice spark', a possible result can be 'no sound'; however, most electronics will accept reverse polarity without self-destructing. Since this feature adds only a few pennies to cost, I would be surprised if this feature is not part of this headset and not surprised if other factors resulted in 'no sound'.
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