Selecting the Sensor

• 1). Survey your home and determine where you intend to put a motion sensor.
  
  
• 2). Choose areas where an intruder is likely to go. Common locations are in a hallway or stairway.
  
  
• 3). Remember that a passive infrared motion sensor detects heat. Eliminate spots where you must aim at heat vents, radiators, open windows where sunlight shines through, or windows where car headlights often shine through at night.
  
  
• 4). Choose a dual technology sensor that includes both microwave and infrared elements if aiming the sensor is a problem.
  
  
• 5). Select either a hard-wired or wireless motion sensor, which will depend on whether you have a hard-wired or wireless security system.
  
  
• 6). Drill holes in walls and route wires in and out of walls to the control panel if you have a hard-wired system.
  
  
• 7). Access a power source for a wireless motion sensor. Some infrared and dual technology motion sensors, however, come with a lithium battery that supplies power.