Plunger Wireless Door Security Sensor, 2GIG (Plunger-2GIG)

I ordered the plunger style, then realized I didn't have room to mount it as per the instructions! The install was on a door where the hinge side was butted up to a "fake door" with lots of glass. No way to drill a deep 1/4-inch hole in that! Instead, I mounted the unit on the latch side of the door, which changes from a friendly plunge action, to a slightly more harsh sweep-action. So far, it works fine, since the square edge of the door rides the dome shape of the sensor to depress it during door closure. Time will tell how long it lasts. Otherwise, install was fairly simple. 3/4-inch Forstner bit is great, but the 1/4-inch hole for the antenna is trickier. You will need a LONG bit for that (>6 inch), since the chuck of the drill gets stuck in the 3/4 hole. I didn't have one handy, so I used a 3/8-inch blade style with an extension. that works fine, and keeps the 3/4-inch intact to contain the device. Pairing was a snap, and I can confirm it works with the VIVINT panel. I set it up as a "DW21R recessed door contact" and the panel learned the code just fine. Pro-tip: pair and test the device before you install it. :)

Works great with my Vivint security system.

I was able to connect to my system without issue; however, once I installed in the door jamb it would not maintain connection. After repeated attempts (remove from jamb/reconnect) I decided to replace with a DW20R recessed door contact, which works great.

I have a few a these throughout the house, covering all doors. I used the included shim as needed on certain doors. The installation could not be easier if you have the right drill bit. I did have one fail with a bad contact (wouldn't always send a door opening signal intermittently), but that door was used an extreme amount of times over several years. I replaced it without fail - battery life and range is great on all of them. I wouldn't hesitate to recommend this sensor for door use.

installed 3 of these in my home, very figity, like it had to be smacked around to finally work properly, put new batteries in, and one of which never really worked right and eventually quit after a week of use. easy to install and get going.

These have worked perfect for both my normal swing doors and the sliding doors in my home. On the sliding doors we put the plunger in the door seal and when the door is shut it pushes the plunger far enough in to work. Originally the alarm company wanted to install really ugly units on the outside of my doors. I did some research and found that these are on the same technology as used with alarm.com and vivint products. They installed easily and work great.

Fantastic little sensors. Pair easily. Amazingly simple install. Clean look. These are the way to go for 2gig. Thanks for the great service.

This product failed after a couple of months of use. Hopefully seller will take it back. On the bright side it makes for a nice clean install. Range was as good or better than the DW20 sensor.