*Indoor monitor supports real-time surveillance, visual and two-way audio intercom, remote unlock and hands-free function. *Outdoor camera features in water-proof, anti oxidation and wear resistance, equipped with rain-proof cover, infrared night view function, which can provide with clear sight at night. *Remotely unlock functions: householders don't have to run to the door，you can remotely unlock by the indoor monitor directly. *Two minutes intercom duration time, after two minutes, it will turn to standby mode, it's more power-saving. *You can monitor what happened in front of your door with indoor monitor.