1.Portable 3.5inch CCTV camera tester 2 PTZ control +video tester+optical power meter+digital multimeter+cable testing 3 OEM Multifunction ... 3.7V DC3000mAh), more reliable, and work 15 hours Easy for use that the train is almost unnecessarySPECIFICATIONS MODELSTest-895 CCTV Security ... Range, 1mV resolutionCapacitor6600pF~66,000μF auto/manual range Portable 3.5" CCTV camera tester with PTZ controller