... tester monitor,ptz tester,cctv camera tester CCTV Camera TESTER 2.8" TFT-LCD Monitor,960(H)×240(V)ResolutionVideo Signal ... normal use after charging for 4 hours. SPECIFICATIONS: 2.8"/'3.5" TFT-LCD CCTV camera Tester 2.8-Inch TFT LCD CCTV TESTER ... -pPTZ controllerCommunicationRS232, RS422 simplex and RS485PTZ ProtocolCompatible with more than 20 protocols such as PELCO-D/P, Samsung, Panasonic, Lilin, ...