Features: Indoor Unit 7inch TFT LCD, no radiation, low power consumption, and high definition widescreen image. With hands-free intercom, electronic control unlock, and monitoring outdoor function. Ringtone volume, image brightness, chroma, call can be adjusted. 12 kinds of chord ringtones are optional, you will not always hear monotonous doorbells. Outdoor Unit With anti-alumina panel brushed and wear-resistant surface processed outdoor case, waterproof and durable in use. Super rainproof, IP55 waterproof level, blue-ray button display, with infrared night vision function. Can turn on the electric unlock and power-off unlock, connected to the door switch, set to delay. Camera HD 700, no bias color. With password, fingerprint, and remote unlock function. Wall-mounted installation, it is simple and convenient to operate. Specifications: Material: Metal +PMMA +ABS Color: As the picture show Voltage: 110-240v Plug Type: AU Plug, UK Plug, EU Plug, US Plug (optional) 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: 3.6MM92 degrees Indoor Unit: 250*150*24mm/9.8*5.9*0.9in Outdoor Unit: 155*100*55mm/6.1*3.9*2.2in 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 Package List: 1 * Outdoor Unit 2 * Indoor Units 2 * 5m Four-Core Cable 3 * Power Supply ( 15V /2A) 1 * User Manual 1 * Remote Control (With a Built-in Button Battery) 1 * No Lock (Includes a User Manual & a Pack of Screws)