... PTZ date analysis and aperture RTS-331 CCTV security video tester PRODUCTION FEATURES:3.5" TFT-LCD screen, English menu, display ... pickup device High accuracy Digital Multimeter can test AD/DC Voltage, AC/DC Current, Resistance, Continuity, Capacitance and Diode test, Auto ... 36mmACCESSORIES: RTS-331 3.5" LCD screen security monitor CCTV tester RTS-331 3.5" LCD screen security monitor CCTV ...