Features: 1. Working voltage: DC 12V2. Working current: Standby 12MA, 1 relay is on 40MA, 2 relay is on 67MA, 3 relays are on 95MA, 4 relays are on 121MA, 5 relays are on 147MA, 6 relays are on 173MA, 7 A relay conduction 198MA, 8 relay conduction 223MA3. Open, close, jog, self-locking, interlock, delay six kinds of work modes4. MODBUS command control mode5. Maximum delay 255 seconds under MODBUS instruction6. MODBUS command In addition to the serial port super terminal input, but also can be used "Modbus Poll" input7. MODBUS command mode, up to 64 devices can be used in parallel8. Size: 90 * 62 * 19.5mm9. Weight: 115 grams10. Maximum load: 10A / 250VAC, 10A / 125VAC, 10A / 30VDC, 10A / 28VDC, 10A / 12VDCPackage included:1 x 8 Channel DC 12V RS485 Relay Module