1. this module is in line with international safety standard, control areas and load area have the isolation groove;
2. USES the loose quality goods relay;
3. have power and relay operation instructions, and bright, disconnect the dawn;
4. signal input signal, the public end and will often start conduction;
5. can be used as a microcontroller development board module, can be used as a home appliance control;
6. dc or ac signal control, can control 220 v ac load;
7. and one often opened a normally closed contact;
8. blue terminal line more convenient.
5x 1 Channel Relay Module
With the power supply and relay instructions, pull off, disconnect does not shine.
The control DC or AC signal, you can control 220V AC load.
There is a normally open and one normally closed contact.
Blue terminals to the control line is more convenient.