Honeywell 5818MNL

The Honeywell 5818MNL is a wireless recessed door and window sensor. Recessed window and door sensors are preferred by those that don't want their wireless alarm system to detract from their home's decor. When installed, the 5818MNL recessed sensor is virtually invisible. The 5818MNL should be installed in the door frame (not on the hinged side) and the included magnet should be installed in the door so that when the door is closed the sensor is opposite the magnet with no more than a 1/2" gap.

To install the 5818MNL recessed window and door sensor, you will need to drill a 3/4" diameter hole into the frame at least 3" deep. The magnet requires a 3/8" diameter hole in the edge of the door or window 1/2" deep. You can secure the 5818MNL transmitter case with (2) #4 flat head, self-tapping screws via the holes on the mounting flanges. You can also remove the mounting flanges by scoring them first with a sharp knife and then snapping them off. A closure plug is included in case you ever need to relocate the 5818MNL sensor so that you can cover the drilled hole.

You should be able to mount the 5818MNL recessed window and door sensor up to 200' nominal from your Honeywell wireless home alarm system. If the sensor loses it's connection to your alarm system, an RF supervision loss signal will be generated. If you are receiving RF supervision loss signals from your 5818MNL sensor, you should add a Honeywell 5800RP wireless repeater in between the sensor and the wireless receiver.

The 5818MNL is powered by an included AAA lithium battery which should last up to (10) years. You will need to replace the battery if you ever receive a low battery signal from the 5818MNL sensor.