Features: Unlocking method: card, remote control, password and the indoor unit unlocking. Ultra-thin all-black indoor unit design , leading the new trend of color video doorbell ( popular in European and American), full of luxury style. Highly waterproof, anti-oxidation and wear-resistant outdoor unit with rain cover, support embedded and mounting installation. Both indoor and outdoor units use touch technology (touch with voice prompts), with high sensitivity. No radiation, low power consumption, high definition 7 inch color image. With monitoring, calling, card, hands-free, indoor intercom function. Support 500 ID user cards (the package provides 5 user cards that have been paired) wireless remote unlocking is effective in 5~10m. Ringtone volume, image brightness, chroma, call can be adjusted. Easy to install, with switching power supply and terminal machine, users can install it independently. Outdoor call intercom: press the outdoor didong button to talk to people in the room. Indoor call intercom: press the monitor button to see the situation of the external unit, then press the intercom button to talk to the outdoor person. Card unlock: 5 user cards. Each user card is already ready to unlock directly. Remote unlock: outdoor unit with built-in receiver, can directly unlock the door by remote control. Password unlock: can set the password to unlock. Specifications: Material: Metal +PMMA +ABS Color: As the picture show Voltage: 110-240v Plug Type: AU Plug, UK Plug, EU Plug, US Plug (optional) NO Lock Voltage: DC12V Current: 200mA Keep: 500kg/1102lb Fault Protection: no mode (locked when power is off) Connection: Use 2-wire, non-polarized connection to access control or export equipment Signal Output: no Doorbell Performance Switching Power Supply: AC110V-240V --50Hz DC15V 1.2A The Whole Machine Current: <800mA Call Delay Time: 120S ± 10% Monitoring Delay Time: 60S ± 10% Camera Sensor: 700 lines Lens: 3.6MM 92 degrees Indoor Unit: 225*128*23mm/8.9*5*0.9in Outdoor Unit: 168*110*65mm/6.6*4.3*2.6in Package List: 1 * Outdoor Unit 2 * Indoor Units 3 * Power Supply 2 * 5m Six-Core Wire 1 * User Manual 5 * ID Card 1 * Remote Control (With a Built-in Button Battery) 1 * No Lock (Includes a User Manual) Note: It is recommended to use all-copper super five-type cable within wiring 30 meters; 0.5-square-wide six-core copper cable for wiring 50~80 meters; a 5m six-core cable is provided for packaging. If you receive the doorbell, please use the 5m six-core cable to test whether the doorbell is working properly.