Two-way voice intercom function SMS remote control, provide you with an intelligent life Make and receive calls,voice messages Support multi-language menu display,voice operation prompts and alarm SMS settings Work as a doorbell Visitors outside the door to press the doorbell, the house host Ding Dong reminder prompting a guest to visit home Anti-demolition alarm function Install a detachable device at the back, and once removed, The host will beep an alarm on the spot, Wireless sensor batteries are low Gate magnetic, infrared low voltage host will send a message tothe APP, Manufacturer: RFGTHY