16ch Relay Board Serial Port Compatible with Arduino

1 16-channel relay module, multi-channel control. 2 RS232 DB9 female interface, convenient and practical. 3 Open, close, jog, self-lock, interlock, delay, all open, all close 8 working modes (8-byte instruction no delay mode). 4 AT command and 8-byte command. The two commands are automatically recognized without switching. The maximum delay under the AT command is 9999 seconds. 5 Maximum Load: 10A / 250VAC, 10A / 125VAC, 10A / 30VDC, 10A / 28VDC, 10A / 12VDC

What's in the box
1 x Relay Module