... equipment (cellphone, interphone, high-power transmitter inner car, dictagraph, wireless pinhole camera, wireless video communication equipment, homemade communication equipment, radio etc.)2.3 ... customers requirement 5.5 Distinguish of direction : <±15° 5.6 Statoscope : 6db 5.7 Dimension : 96*58*24 mm 5.8 Weight : 50g 5.9 Working ...