VRV A/C Access Module is designed to control the VRV central air conditioning system by transforming the Zigbee control signal to RS485 signal. Makes the central air conditioning system access into Homemate smart home system, and achieves the remote control, timer control, scenes control and linkage via Homemate APP. Support central A/C brands of DAIKIN, TOSHIBA, Mitsubishi Heavy Industries, Mitsubishi Electric and HITACHI.