1. the module complies with international safety standards, the control area and the load region isolation trench;
2. with the power supply and relay instructions, pull off, discont does not shine;
3. the signal input with signal common terminal will start with regular conduction;
4. can be used as a microcontroller development board module can be used as home appliance control;
5. the control DC or AC signal, you can control 220V AC load;
6. there is a normally open and one normally closed contact;
7. blue KF301 terminals to the control line is more convenient.