... signal level test and audio tester 4.OEM CCTV Monitor/CCTV TesterFEATURES3.5"TFT-LCD , 960(H)×240(V)resolutionOptical power meter, ... Current6.6mA, 66mA, 660mA, 10A Manual rangingResistor660, 6.6K, 66K, 660K, 6.6M, 66MΩ auto/manual rangeContinuityBuilt-in buzzer ... ---+50°CWork Humidity30%-90%Dimension/Weight112mmx189mmx47mm 3.5"inch TFT LCD CCTV tester monitor with PTZ control and optical multimeter