7in Direct Press Type Smart Video Door Phone Intercom System With Electric Strike for Villa House Office Apartment4 Monitor(SY828NMJAENO4) Item Type: Video Intercom Material: Aluminum alloy /ABS/ stainless steelPurpose: Can be used for apartment, villa, hotel, office, public buildings visual doorbell Outdoor Doorbell:Wiring System: BUS 2-wireCamera: CVBS 1000TVL LED: White LED Power: Standby 0.1W Effective Distance: Approx.100m/328.08ft (2 x 0.75mm²) Angle: 92 ° Operating Temperature: -20 - +60℃ Indoor Monitor:Wiring System: BUS 2-wire Screen Resolution: 1024 x 600 Effective Area: 154.08(H) x 86.58(V) 7inPower Consumption: Standby 0.5W Call Delay: 120s±10% Monitoring Delay: 60s±10% Operating Temperature: -20 - +60℃ BUS Power Supply: Input Voltage: AC 100-240VAC Output Voltage: DC24V/2.5A Electric Strike: Size: Length: Approx. 150mm//5.91inWidth: Approx. 39.5mm/1.56inHeight: Approx. 31mm/1.22inVoltage: 12 VDC Current: 450mA unlocking 200mA locking