022301 12V 30A Normally Open Optocoupler Relay Module - Deep Blue
On-board EL817 optocoupler anti-interference; On-board 12V 30A / AC 250V 30A / DC 30V; Lifetime: 100000 times; Can connect to I/O of SCM directly; With output indicator; With freewheeling diode protection short response time; With NO output no NC output.