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D-Link DHM-901T User Manual
Product Overview
Hardware installation: Contact Sensor
inserting batteries into your DHM-303t Contact Sensor
Use a coin to open the case, then lift the top cover off of the contact sensor.
Insert the CR123A 3V battery as indicated.
Replace the top cover of the contact sensor and make sure the two halves snap together.
Pairing the DHM-303t Contact Sensor
Press and hold the pairing button on the DHM-401T Gateway until you hear a beep and the Online Status LED
flashes green. You now have 60 seconds to pair sensors to the gateway.
Press the pairing button on the front of the DHM-303T Contact Sensor. The LED will turn on.
When the 2 devices have successfully paired, the DHM-401T gateway will beep 2 times, and the LED on the
DHM-303T Contact Sensor will flash for 2 seconds.
Mounting the DHM-303t Contact Sensor
Make sure your door or window is closed, then use one of the included adhesive strips from the included DHM-
303T mounting kit to attach the contact sensor piece to the edge of your door or window.
Put the screws from the included DHM-303T mounting kit through the two holes at the top and bottom of the main
contact sensor and mount it to your door frame or window frame next to the contact sensor piece.
Make sure that the main contact sensor and the contact sensor piece are aligned to that the small ridge on both
parts are next to each other when your door or window is closed. The main contact sensor's LED will flash when
the contact sensor piece is moved next to or away from it.
