Welcome to our store! 1. Relay supports six working modes including on, off, jogging, self-locking, interlocking, and delay. 2. There are two command control modes. 3. The maximum delay for the standard command is 255 seconds, and the maximum delay under AT command is 9999 seconds. 4. In standard command mode, the relay can connect up to 64 units in parallel. 5. AT command can be entered via the serial port super terminal (serial port assistant). Item Type: Relay Working Voltage: DC 12V Working Current: standby 12MA, 1 relay on 40MA, 2 relays on 68MA, 3 relays on 94MA, 4 relays on 120MA, 5 relays on 148MA, 6 relays on 174MA, 7 relays on 199MA, 8 relays on 220MA Standard Baud Rate: 9600BPS Select Baud Rate to Jumper: 2400, 4800, 19200BPS Size: Approx. 100 x 72 x 20 mm / 3.94 x 2.83 x 0.79 inches (circuit board) Approx. 100 x 88 x 42 mm / 3.9 x 3.46 x 1.65 inches (box with rail) Parameters for DIN Rail Box: Product Model: UM72 Color: Green Width: Suitable for circuit board width UM72 (inside 72) Insulation Class: Flame retardant VO level Base Plate Length: Suitable for 10cm circuit board Net Weight: Approx. 72 g / 2.5 oz Installation Method: DIM35 and C45 rail Weight: Approx. 120 g / 4.2 oz (circuit board) Approx. 198 g / 7 oz (box with rail) Maximum Load: 10A / 250VAC, 10A / 125VAC, 10A / 30VDC, 10A / 28VDC, 10A / 12VDC 1 x 8-Channel RS485 Relay (with DIN rail box) Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!