D-Link DCH-Z310 User Manual page 15

Section 2 - Installation
Step 4:
Remove the bracket from the wall. Depending on the material
of the wall or ceiling, use appropriate tools to drill two holes at
your markings. After drilling the holes, insert the plastic anchors
to support the screws.
Step 5:
Screw the bracket into the wall. Line up the bracket and the smoke
sensor, then push the sensor onto the mounting bracket.
Step 6:
Attach the cover to the mounting bracket for your device by
turning it clockwise to fix it into place. Ensure that the smoke
sensor is securely attached to the mounting bracket.
D-Link DCH-Z310 User Manual 12