Item Type: Home Intercom Doorbell Material: ABS Indoor Unit Specifications Screen Size: 7 Inches, 16:9 Display Resolution: Digital: 800x(RGB)x480 Viewing Angle: 50 Up, 70 Down, 70 Left or Right Brightness: 200cd/m Ringtones: Polyphonic Synthesis Ringtones Sensitivity: 58dB Signal System: PAL/NTSC (Optional) Input Voltage: AC 100V-240V~ 50Hz/60Hz Overall Power Consumption: 6W(400mA) Standby Power Consumption: 1. Do not install the indoor unit in a place with very high temperature or humidity, and keep it away from the TV.2. Do not touch the device with wet hands, and do not let water or other liquid flows into the machine.3. To keep the screen clean, gently wipe the screen or camera with a soft cloth that does not contain alcohol glass cleaner. Do not use laundry detergents, thinners, volatile or aggressive liquids for cleaning.4. Do not place the product in a strong magnetic area.5. Please avoid tossing, throwing and hitting powerful machines.6. Due to the strong gloss, the picture will be blurred and hard to read.7. Please unplug the power supply if not in use for a long time.8. If the machine is not working properly, please ship the machine directly to our after sales service department. Do not disassemble by yourself. 1HD Camera: The home doorbell adopts ultra high definition camera board, and the photo effect is good. Exquisite and durable, with infrared night vision function. 2Multifunctional: This wired doorbell has hands free intercom function, electric control lock function, outdoor monitoring function, indoor intercom function. 3Unique Design: The video surveillance camera has a thin design and 25 ringtones to choose from, all of which make it a luxurious and high quality decoration style. 4Use: The wired video doorbell can support up to 1 outdoor unit and 4 indoor units at the same time, the outdoor unit has a rain cover, and the outdoor unit has a ringback tone for calls. 5Connection Line: The available distance of the connection line of the intercom doorbell is 200m, and the guide rail of 5x0.75mm can be used, which will not affect the displayed pictures and intercom.