Power supply-1
3.7V Lithium battary
Power supply-2
Receiver: 9V battery
Low battery indicate-1
<3.4V led light flashing
Low battery indicate-2
<6 V led light flashing
Signal transmmission format
Multi-frequency pulse
Singal output level
21Vp-p
Dimensions (LxWxH)
Transmitter : 152*55*34mm
Weight ( battery included ) (LxWxD)
Transmitter: 0.14kg