◆ 2.4Ghz wireless freq, open distance:180-400m;

◆ Built-in backup battery for indoor phone;

◆ Maximum 1 cameras and 4 monitors at same time in a system;

◆ With function of taking pictures;                               

◆ 100pcs of pictures can be stored; 

◆ Touch key,7-inch digital screen;

◆ With a call, intercom, unlock, monitor, infrared night vision function;

◆ Outdoor station battery can be used for 180days under standby mode;