Wireless PIR Doorbell & Alarm

Specification:

Sender
● Power Supply: DC4.5V(1.5V Battery x 3)
● Frequency: 433M Hz or 315 M Hz
● Static Current: 30 uA
● Detect Distance: 8m
● Detect Angle: 160 degree
● Emit Distance: <30m

Receiver
● Power Supply: DC4.5V(1.5V Battery x 3)
● Frequency: 433M Hz or 315 M Hz
● Receiver Distance: >30m
● Alarm Sound: >65 DB