... video test PTZ controller CCTV Security Tester BS-CS03Eleven-in-One CCTV security tester Combine the video test, Optical Power ... cameraOptical Power MeterWavelength850, 1300, 1310, 1490, 1550, 1625nmDetectorInGaAsLinkerFC/PC(SC, ST)Measurement Range-70~+10dBmDisplay Resolution0.01dBDigital MultimeterReading range ... /Weight112mmx189mmx47mm / 500g BESNT Multi-function CCTV Security Tester BS-CS03