12V 8CH RS485 Relay Modbus RTU Protocol Serial

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Features:
8 channels relay. 
Support modbus pol input.
Under the mobus command mode, it can support up to 64 devices in parallel.
Under the "delay" command, the maximum delay is 255 seconds.
Mobus commands can be made serial hyperterminal (serial assistant)  or "modbus poll" enter.
 "Open" "close"  "momentary" "self-locking" "interlock" "delay" 6 commands.

Specifications:
Supply voltage: DC 12V 
Maximum load: 10A / 250V AC, 10A / 125V AC, 10A / 30V DC, 10A / 28V DC, 10A / 12V DC
Item size: 90 * 62 * 19.5mm / 3.45 * 2.44 * 0.77in
Package size: 90 * 62 * 19.5mm / 3.45 * 2.44 * 0.77in
Item weight: 115g / 4.06oz
Package weight: 118g / 4.16oz

Package lists:
1 * 8CH relay board