1.Equipped with RS485 interface, which can realize remote monitoring function through Modbus protocol;2.It has the function of power down memory and call self starting, provides a variety of warning and protection measures, and can work all year round;3.With air conditioning fault alarm, external emergency ventilation contact and internal fan energy-saving working mode;4.Daily maintenance is simple and convenient, high reliability, flexible installation, can achieve embedded, plug-in installation.