Features: Indoor Unit: 7inch TFT LCD indoor unit which has no radiation, low power consumption can provide high definition widescreen images. Equipped with hands-free intercom function, electrically controlled unlock function, monitoring function. The image brightness, chroma, ringtone volume and intercom volume of the indoor unit are adjustable. 12 kinds of music ringtones are ready for you, eliminating your annoyance of always hearing monotonous doorbells. Outdoor Unit: The outdoor unit with anti-oxidation aluminum panel which goes through wear-resistant surface treatment has HD 700 TV lines camera to guarantee no color cast. Super rainproof, IP55 waterproof level, wall-mounted installation is simple and convenient. Power-on unlock and power-off unlock, can be connected to exit switch, support to set delay. Password/fingerprint/remote control unlock function, blue button display, with IR night vision function. NO Lock: NO lock can be directly connected to the outdoor unit with a power supply so that the lock is able to operate without an additional power supply, and its installation is simple and convenient. 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% Ringtones: 12 ringtones Camera Sensor: 700 TV lines Lens: 3.6mm 92° IR Night Vision: Support Waterproof: IP55 Indoor Unit Size: Approx.250*150*24mm/9.8*5.9*0.9in Outdoor Unit Size: Approx.155*100*55mm/6.1*3.9*2.2in 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 * 15V/2A Power Supply 2 * 5m 4-core Connection Cable 1 * User Manual 1 * Remote Control (Built-in 1 23A 12V battery) 1 * NO Electric Strike Lock (With a user manual)