Attach the multi-sensor to In-wall mount. Press and hold the power button on the right side of the device until LED display lights up. Data Mode selection appears momentarily, and the status light continues to blink until the device is connected to servers.
To lock the multi-sensor into the In-wall mount, use your 2 mm hex screwdriver to screw the security screws (found in the surface mount kit) into the holes on the right and left side of the In-wall mount, as follows.
Attach the outlet power adapter to the end of the power cord and plug it into the nearest electrical outlet.
Click your multi-sensor into the surface mount and press the power button on the right side of the device to turn it on. The LED light should blink to indicate that the device has power.