In this instructable ,I am going to build you can build a PIR motion sensor home security system.you can make your own casing and layout.

Supplies

Pir sensor x1

18650 battery x1

battery charger module x1

buzzer x1

toggle switch x1

wires x1

Step 1: The Wiring

Connect the battery's + and - to the chargers + and -.Take a wire from the + and connect it to the middle pin of the switch. Take a wire from any side of the switch to the vcc of the pir sensor. Connect the battery's - terminal to the GND of the PIR sensor.Connect the out of the sensor to the input of the buzzer and the battery - terminal to the GND of the buzzer.

There is a jumper n the circuit side that can be used to set different output modes but the motion sensing will be the same. Also we can solder a temperature sensor or an LDR, then the PIR sensor will only work at night.