Features:7inch TFT LCD, no radiation, low power consumption, high definition wide screen image.Speakerphone function.Electronic control unlock function.It has the function of monitoring the outdoor.Image brightness, chroma, ringtone volume and intercom volume are adjustable.Aluminum oxide panels and wear-resistant surface treatment of the outdoor camera, HD 700 lines, no color.Indoor machine ultra - thin aluminum panel design, beautiful all show luxurious style.16 chords and chords to choose from, and you won't always hear the monotonous doorbell.Super waterproof, IP55 waterproof, with night vision infrared function,Wall-mounted design, easy to install.Specification:Material: Aluminum alloy & PMMA & ABSWeight: 1100g/38.8oz Plug & Voltage: AU Plug 110V-240V, UK Plug 110V-240V, EU Plug 110V-240V, US Plug 110V-240V (Optional)Switching power supply: AC110V-240V--50Hz DC15V 1.2ACurrent: less than 800mACall delay time: 120S 10%Monitoring delay time: 60S 10%Camera sensor: 700 linesShot: 3.6MM92 degreesIndoor Unit: 180*120*18mm/7.1*4.7*0.7inchOutdoor Unit: 155*100*50mm/6.1*3.9*2inchOutdoor call intercom: press the button on the outdoor unit to talk to people indoors.Indoor call intercom: press the monitoring key to see the outside machine, and then press the intercom key to talk to people outside.Monitoring: press the monitoring key to see the situation of the external machine.Unlocking: the indoor machine has the function of unlocking.Hands-free: hands-free intercom function.Package List:1 x 4-core 5-meter wire1 x Power supply 1Set x Screws1 x Instructions2 x 2-core terminal wires1 x Doorbell Indoor Unit 1 x Doorbell Outdoor Unit2 x 4-core Wire Port1 x 3-core Terminal Wires.