Ademco 5820L | Honeywell 5820L Wireless Slimline Contact

When we bought our house, the previous owner hadn't kept the security system maintained. Several doors had contact sensors hanging off the frames, and a few wires were pushed up into the doorframe. I've been resurrecting the complete security system over the last week or so, but I didn't want to take the door trim off, fish out the wires, re-hang the trim, etc, etc. These slimline wireless sensors aren't *that* much larger than the wired versions. Yes, they're larger. Yes, they're a little more noticeable. But they're wireless and allowed me to fix the couple of doors where the wires had gone bad without taking my walls apart. That's worth it, in my book.I installed my own panel, so I had my panel's master codes. To add these to your system, you will either need to contact your installer, or you will need to have the installers codes to program the panel (and the know-how to use them) yourself. If you're reasonably experienced with "Do it yourself" projects, this is not difficult. It took me about 30 minutes of research online to figure out how all consumer-grade security panels work and about an hour of reading the programming manuals to work out how to program mine.The honeywell panel (with the newer keypads) makes adding these into the system a breeze. You just set the zone type, tell the panel it's an RF sensor, and then separate the magnet and transmitter a couple of times to auto-enter the serial number. From that point on, it "just works". You should make sure to test your sensors in the location you want to install them before you tape or screw them to your door, but I have a rather large house, and these worked fine when the receiver (my RF keypad) was on the first floor on one side of the house, and the sensor was in the basement on the opposite side of the house. I live in a pretty remote area, though, with almost no RF interference, so your milage may vary.Bottom line, I love these sensors, and I'll buy them again as I need more.

I've had 3 of these develop what appear to be tamper switch problems (i.e., the tamper switch triggers an alarm when there is no tampering. I fixed this by putting 1 or 2 layers of tape on the ridge the keeps the tamper switch down. .I use these on my PVC double pane windows sills. I glue rare earth magnets to the top pane and stick this thing on the lower pane (and ditch the magnet it came with) so that it alarms no matter which part of the window gets opened.They are pricey, but they look much better than the bigger ones. Plus, these don't require me to drill into my new vinyl windows.

These fail a lot. I have had to replace several. Some have lasted a long time. Others, just a few months. Too expensive to keep risking that. The security company I am using said they no longer use these because of the high failure rate. Too bad, because the slim size makes them almost unnoticeable. But, if I can’t count on them, what’s the point in having a security system?

I have been using these since they were released. The only issue, a TAMPER issue, is easily solved at installation. Place about four layers of Electrical tape [about a 1/4" square] on top of the tamper post., This prevents a false tamper caused by home vibrations. The battery life is around the 10 year life claimed.Replacement battery should be an AAA LITHIUM battery.

This product functions beyond expectations. I had five sensors up & running in 30 minutes, very simple. There is a GR8 feature that I would like to point out that may or may not be mentioned in the description- the device has a "Tamper Switch" to protect/alert if someone tries to open the exterior plastic cover on the sensor. There is one single con preventing me from giving it 5 full stars! It is the "HUGE" "MASSIVE" Magnet Cover which simply does absolutely nothing besides restricts mounting to certain areas! However this is not a deal breaker & i'm not shooting the overall item down- but Honeywell/Ademco should slim the case down to make it more sleek, versatile & useful. Just to clarify you may find yourself cracking open the magnet side & removing the magnet from the plastic housing which is simply what I did- quick tip: I used white shrink wrap over the magnet to dress it up before I siliconed it to the window- works perfect & looks nice, with no ill operating effect at all!!!! I hope I am sending out helpful info, good luck! p.s. I love, love, love Honeywell security products!!!!!!

These are a great addition to any Honeywell wireless alarm system. You will need to have access to the installer's code for your panel else you will need to contact your alarm system provider to get these paired to your system.I have had these wireless contacts for about 5 months w/out any issues.They come with very high quality batteries and a high quality double-sided tape that should provide very long term reliable placement and function.They seem to have no problems at all communicating with a wireless receiver that is at least 60ft away and through several walls.

It doesn’t work, doesn’t register with the panel.Poorly designed to start with, as their little buttons keep breaking, high failure rates.

Easy to install and works great. Have a few of these on my Vista 20P. They are easy to pair up and the battery lasts for a long time. Also the slim profile is much better looking then some of the bulky ones out there. Recommended buy.