Summary One call button, water-proof analog kit for home or villa Kit containing 5-meter 4-wire cable, DS-KB2421T-IM and DS-KH2220, as well as additional accessories Included is a power supply adaptor for Europe. Technical Details Video/Door Station Parameters Dimensions: 1920 x 1080 Lens: 1/2.7" CMOS FOV: 37.2° vertical and 66.2° horizontal Audio/Door Station Parameters Audio Input: Omnidirectional microphone integrated within Audio Output: Loudspeaker built-in Device/Door Station Interfaces: Output I/O Four-Wire relay output: one Video input: 1 channel, audio output: 1 channel, power supply: 1 channel, grounding: 1 channel General/Door Station 12 VDC is the power supply. Maximum Power Consumption: 5W Operating Temperature: -14°F to 131°F (-10°C to +55°C) 10% to 90% of the working humidity The dimensions of the indoor station/display parameters are 128 mm × 42 mm × 24.8 mm, with IP65 protection. Physical button is the operation method. Type: 7-inch TFT LCD with color