For most PIR’s within Burglar Alarms you need 6 wires:- 2 for power (+ and – 12 volts) 2 for the alarm loop and 2 for the 24 hour tamper loop. Some PIR’s need an extra pair of wires so you can tell which is the FIRST TO TRIGGER, but not all panels can use this signal. Most PIR’s have jumper links or switches inside to turn off the LED and to enable Pulse count (for electrically noisy or problem areas etc.). Most users would want the LEDNOT to illuminate in a bedroom (you can still test them by using the”walk test” facility present in most panels, that gives a “chime” when activated).

For most magnetic door/window contacts you need 4 wires:- 2 for the alarm loop and 2 for the 24-hour tamper loop. Just trim back the power wires (usually designated black and red), or if a connector block isused, screw them into 2 unused screw connections, in case you ever need to modify that zone. However, bear in mind that if your door magnet is first in-line on that zone, and you have PIR’s further down the line,you will need to ensure that the red/black 12v power pair is continued through to the PIR and any other device that needs 12 volt power.

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