Features: Ultra-thin design all-black indoor unit, leading the new trend of color video doorbell (now popular in Europe and America), fully presents beautiful and luxurious style. Highly waterproof, anti-oxidation and wear-resistant outdoor unit with rain cover, supports two installation modes of embedded installation and hanging installation. Both indoor and outdoor units adopt touch technology (touch with voice prompts), high sensitivity. No radiation, low power consumption, high definition, 7 inch color images. With monitoring, calling, card swiping, hands-free, indoor intercom functions. Support 500 ID user cards (the package provides 5 user cards that have been paired). Wireless remote unlock function is effective within 5-10 meters. The ringtone volume, image brightness, chroma and intercom volume are adjustable. With switch power supply and terminal machine, users can install by themselves, easy and convenient. Functions: Outdoor call intercom: press dingdong button of the the outdoor unit to talk to the indoor person. Indoor call intercom: press the monitor button to see the outdoor unit, then press the intercom button to talk to the outdoor person. Monitoring: once pressing the monitor button, the indoor unit can see the situation of the outdoor unit. Unlock: the indoor unit has unlock function. Hands-free: hands-free intercom function. With card swiping unlock function: 5 user cards. Each user card is already ready to unlock directly. With remote unlock function: outdoor unit has a built-in receiver, and remote control can direct unlock. With password unlock function: you can set the password to unlock. Specification: Doorbell: Material: ABS + PMMA Optional Plug Type: AU Plug, UK Plug, EU Plug, US Plug Switch Power Supply: AC110V-240V --50Hz DC15V 1.2A Whole Unit Current: < 800mA Call Delay Time: 120S±10% Monitoring Delay Time: 60S±10% Camera Sensor: 700 TV lines Lens: 3.6mm 92° IR Night Vision: Support Indoor Unit Size: Approx.225*128*33mm/8.9*5*1.3in Outdoor Unit Size: Approx.168*110*85mm/6.6*4.3*3.3in NO Lock: Voltage: DC12V Current: 200mA Holding Force: 500kg/1102lb Fault protection, NO mode (locked when not supplied with power) Use 2-wire non-polarized connection to access control or export equipment Signal Output: No Package List: 1 * Outdoor Unit 2 * Indoor Unit 2 * Power Supply 2 * 5m 6-core Connection Cable 1 * User Manual 5 * ID Card 1 * Remote Control 1 * NO Electric Strike Lock (With a user manual)