ABYA R421C32 DC12V 32 Channels Modbus RTU RS485 Bus Relay Module UART Serial Port Board for PLC LED Home Automation Door Lock 1. DC 12V power supply._x000D_ 2. standby current (all relays closed) 9MA, all 32 open relays 150ma_x000D_ 3. " open " " close " " Momentary " " Self-locking " " Interlock " " Delay " 6 commands_x000D_ 4. MODBUS RTU 5. under the "delay" , the maximum delay is 255 seconds_x000D_ 6. MODBUS Commands can be made serial hyperterminal (serial assistant) or 'modbus Poll' enter._x000D_ 7. under the MODBUS mode, it can support up to 64 devices in parallel_x000D_ 8. size: 180x90x20mm_x000D_ 9. Weight: 296g_x000D_ 10. maximum load: 10A / 250VAC, 10A / 125VAC_x000D_ colour:black_x000D_ Material:plastic_x000D_ Package Contents:_x000D_ 1 * DC 12V 32 Channels R-S485 Modbus RTU Relay Module_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_