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For new sales only
The Honeywell 5816 door/window sensor is a two zone transmitter with both built-in magnetic reed switches and wired closed circuit contact loop for powerful and reliable security protection.
Get started with your new door/window sensor.
View instructions for connecting a door/window sensor to your panel.
View instructions for replacing your door/window contact sensor's batteries.
Learn how to fix a sensor tamper error.
View instructions for resolving a sensor malfunction.