i-Mall 7'' Video Door Phone Doorbell Intercom Access Control Kit, Electric Strike Lock & RFID Keys & Remote Control & Night Vision Touchpad Buttons Design: touchpad buttons with blue back-light LED make the monitor more practical at night and more fashionalbe, beautiful on appearance. Intercom Communications: Dual intercoms between indoor and outdoor unit, and dual intercoms between indoor units. IR Night Vision Function: Advanced infrared-assisted lighting function enables you to identify the visitors even at night. Access control system: With a electric strike lock & four ways to lock release; Unlock by unlock button, RFID key fobs, password or remote control. Elegant and Weatherproof Outdoor Unit: The use of PMMA and ABS materials makes the outdoor unit look more elegant; Sunshield cover and sealing design ensure the outdoor unit weatherproof.