WESPC Original AD485-3 Generator Parts Extension Module Interface Facilitates Working voltage DC 8V----36V Continuous Power consumptionWorking:MAX 1W (Standby:MAX 0.5W) Working condition -40-70℃ Storage condition -40-80℃ Overall dimension 88mm*37mm*63mm Panel cutout 0.15Kg Summary AD485-3 is the expansion module of RS485 interface, which has 3 interfaces, namely RS485 host interface, RS485 slave 1 interface, RS485 slave 2 interface. It can convert 1# RS485 interface to 2#