Things You'll Need
Noncontact circuit tester
Weatherproof silicone caulk
Installing a motion-activated light on a building is a handy security feature that almost anyone can set up. The Brinks 7120 features a pair of powerful outdoor lights and a motion sensor combined in one unit that you can mount to any standard outdoor electrical junction box. Do not install it near flammable materials or liquids.
Turn off power to your location at the central electrical breaker or fuse box. Find the breaker or fuse that controls the location where you want to install the light; switch off that specific breaker or unscrew that fuse. Use a noncontact circuit tester to ensure no electricity is flowing to the location
Remove the existing light fixture to expose the junction box. If there is no box where you want to mount the light, install a moisture-safe junction box. This is a complicated task that involves running power from another location. It should be carried out by a licensed electrician.
Mount the provided gasket onto the lighting fixture and pull the wires through the gasket.
Connect the wires coming out of the junction box to the wires on the light, matching black to black and white to white. Twist the ends of the matching wires together clockwise using needle-nose pliers and then twist on the wire caps that came with the Brinks 7120 light. Turn the caps in a clockwise direction and make them as tight as possible in order to create a firm connection between the wires. Wrap both wire connections separately with electrical tape.
Tuck the wires inside the junction box and secure the light's base plate to the box using the mounting screws that came with the light.
Apply weatherproof silicone caulk around the base of the light fixture and then install two PAR 38 floodlight bulbs into the light sockets.
Point the motion sensor at the center of the area you want the light to cover.
Turn on power at your electrical box and turn on the light from the switch, if necessary. The light will work both on a circuit with a switch and on one without a switch.
Turn the "SENS" dial on the light to adjust its sensitivity. Turn the dial to the right to increase sensitivity and to the left to decrease sensitivity.
Turn the "TIME" dial on the light to adjust how long the light stays on when it is triggered. Turn the dial to the right to increase duration and to the left to decrease duration. The minimum duration is five minutes and the maximum duration is eight minutes.
The Brinks 7120 has a manual override switch that enables you to control the light as if it were not sensor-driven. To override the light, turn it off at the switch and then turn it immediately back on again. The light will then remain on until it is turned off at the switch.
To change the 7120 back to automatic mode, turn it off at the switch, wait at least five seconds and turn it back on. The light will remain on for the duration set by the TIME dial, after which it will turn off and recommence being controlled by the sensor.
Andrew Tennyson has been writing about culture, technology, health and a variety of other subjects since 2003. He has been published in The Gazette, DTR and ZCom. He holds a Bachelor of Arts in history and a Master of Fine Arts in writing.