... various communication equipment (cellphone, interphone, high-power transmitter inner car, dictagraph, wireless pinhole camera, wireless video communication equipment, homemade communication equipment, radio ... it is low power and can work continuously for a long time.2.5 With intellingent analysis software inside, it ... GMHz 5.2 Power supply : 4V 600Ma 5.3 Detecting range : Radius 0.5-15 M 5.4 Color : ...