Interlogix TX-E221 Posts

Hi DIYers! Today, we're taking a look at our best wireless recessed door contacts. These devices are great for when you want sensors that are completely hidden and not visible when the door is closed. They take a little bit of extra effort to install, but it's worth it for many users!

When you have a recessed contact, you actually need to drill holes into the door and its frame. The hole in the frame is larger and sized to support the main sensor. The hole in the door is smaller and designed to support the magnet. Some recessed contacts use extremely small magnets that can be mounted without drilling holes. There is also the Honeywell 5800RPS, which uses a plunger switch rather than a magnet.

The key with wireless recessed contacts is knowing which ones are compatible with your system. This depends on the wireless receiver that your system has installed. If you have a hardwired panel with no wireless receiver, then you cannot use wireless sensors. It's really no different than any other wireless sensor. You might also want to know the size of the holes you will need to drill. For your convenience, we put together a nifty table that outlines nearly all of the information you could want:

Sensor Name & Picture	Wireless Frequency	Hole Size for Sensor	Hole Size for Magnet	Notes
Honeywell 5818MNL	345 MHz	3/4" Diameter, 3" Deep	3/8" Diameter, 1/2" Deep	Honeywell 5800 Series Sensor. Compatible with all Honeywell and 2GIG Panels and 345 MHz IQ2+
Honeywell 5800RPS	345 MHz	3/4" Diameter, 1.25" Deep	None needed!	Honeywell 5800 Series Sensor. Recessed plunger switch. Needs inner 1/4" hole in center of existing hole for antenna. Compatible with all Honeywell and 2GIG Panels and 345 MHz IQ2+
2GIG DW20R	345 MHz	11/16" Diameter, 2.6" Deep	11/16" Diameter, 1/2" Deep	2GIG 345 MHz Sensor. Compatible with all 2GIG Panels, Honeywell Lyric Controller and 345 MHz IQ2+
Interlogix TX-E221	319.5 MHz	3/4" Diameter, 2.5" Deep	3/4" Diameter, 1/2" Deep	Interlogix/GE Sensor. Compatible with all Interlogix/GE Systems, legacy Qolsys Systems and 319.5 MHz IQ2+
Qolsys IQ Recessed Door-S	319.5 MHz	3/4" Diameter, 2.25" Deep	3/4" Diameter, 5/8" Deep	Qolsys S-Line Sensor. Compatible with all Interlogix/GE Systems, legacy Qolsys Systems and 319.5 MHz IQ2+. Encrypted when paired with Qolsys IQ2 or IQ2+.
DSC EV-DW4917	433 MHz	11/16" Diameter, 3" Deep	3/4" Diameter, 5/8" Deep	Legacy DSC Sensor. Compatible with all DSC Systems and 433 MHz IQ2+. Screw mount and press fit installation options available.
DSC PG9307	915 MHz	0.75" Diameter, 2.66" Deep	None needed!	PowerG Sensor. Uses a 2 mm magnet that requires no hole. Uses 128-bit AES encryption. Compatible with DSC PowerSeries Neo Panels, DSC Iotega, every IQ2+.

If you're monitored with Alarm Grid, or if you're interested in monitoring, our team would be happy to help you find the best wireless recessed contact for your needs. The best way to reach us is to email support@alarmgrid.com. You may also call us at (888) 818-7728 from 9am to 8pm EST M-F. We look forward to helping you find the perfect security equipment to protect your home or business!