1、7-inch TFT LCD screen with no radiation, low power consumption and high definition. 2、Has the function of hands-free intercom and electric lock-control unlock. 3、Support to monitor the outdoor situation.Press monitoring key on the indoor unit to see the situation of outdoor unit. 4、Image brightness, chrominance ring volume and intercom volume can be adjusted.16 chord sounds are available, and you won't always hear monotonous doorbells. 5、The outdoor unit with infrared night vision function and it it is completely waterproof. Features: 7-inch TFT LCD screen with no radiation, low power consumption and high definition. Has the function of hands-free intercom and electric lock-control unlock. Support to monitor the outdoor situation.Press monitoring key on the indoor unit to see the situation of outdoor unit. Image brightness, chrominance ring volume and intercom volume can be adjusted. 16 chord sounds are available, and you won't always hear monotonous doorbells. The outdoor unit with infrared night vision function and it it is completely waterproof. The indoor unit adopt ultra-thin design, with blue touch button, fashionable and luxurious. The outdoor unit design with wear-resistant surface and metal housing. Easy installation by yourself, wall-mounted installation is very simple and convenient. Specification: Condition: 100% Brand News Material: ABS+PMMA Color: As picture shown Switching power supply: AC100-240V--50Hz/60Hz DC15V 2A Machine totally current: less than 800mA Call delay time: 120S ± 10% Monitoring delay time: 60S ± 10% Camera sensor: PC3003 700 line Lens: 3.6MM/92 degrees Outdoor unit with infrared night vision Size of Indoor unit: Approx. 225 * 128 * 23mm/8.8 * 5 * 0.9in Size of Outdoor unit: Approx. 120 * 50 * 43mm/4.7 * 2 * 1.7in Package List: 1 x Outdoor Unit 2 x Indoor Unit 2 x 15V/2A Power Adapter 1 x 5 Meter 4-core Cable1 x 5 Meter 6-core Cable 1 x User Manual