Motion detector with alarm - barking dog

This circuit is PIR detection circuit picks up the radiation from humans. Improved PIR sensitivity will provide signal to play the sound of a barking dog.
Technical data

- Power supply : 4.5-6VDC.
- Power consumption : 0.02mA. (standby), 325mA. (working, @ 8 Ohms 0.25W.)
- Detection range : 4-5 meters.
- Can be select the barking dog voice : flock of barking dogs and barking dog.
- Volume control equipped.
- PCB dimension (sensor board) : 1.21 x 1.01 inch.
- PCB dimension (main board) : 1.58 x 2.21 inch.