Features:* Visual intercom: 90-second visual intercom with adjustable intercom volume, indicator light and adjustable image display effect.* Two monitoring modes: 90 seconds with audio monitoring, support unlock open intercom; unlimited monitoring time.* Unlock method: Support signal lock and power lock; adjustable screen standby time, which default time is 3 seconds; support signal or voltage control gate.* Language: The number of the door machine shows in English.* Support for maximum 2 outdoor cameras and 4 indoor monitors work at the same time. When the extension is connected, room and room can intercom with each other.Specifications:Indoor Monitor:Display: 7-inch TFT-LCD screenLCD Resolution: 800*480Frame Rate: 30FPSSize: 235*160*20mm/9.25*6.29*0.78inWeight: 352.5g/12.43ozOutdoor Camera:Sensor: 1/4" CMOSResolution: NTSC: 720*480; PAL: 720*576TV Line: 700TVLVideo Output: 1.0 VPP 75Shutter: Auto: 1/50(1/60) to 1/100,000secIR Distance: 2-3 metersVision Distance: 100 meters max.Power Consumption: 2WWorking Temperature: -10-55Size: 225*128*24mm/8.85*5.03*0.94inOthers:Power Supply: DC 12V / 2AMaterial: ABS +Zink AlloyColor: BlackPackage Size: 23*14*9cm/9.05*5.51*3.54inPackage Weight: 937g/33.05ozPackage List:1* Indoor LCD Monitor1* Outdoor Camera1* Monitor Bracket1* Rain Shelf for Outdoor Camera1* Power Adapter1* Set of Mounting Screws1* Wire Cable Set1* English User Manual