The module complies with international safety standards, the load control area and regional isolation tank;

Song music using authentic relay;

With power supply and relay instructions, pull off, disconnect does not shine;

When the input signal has a signal, often beginning with a common terminal will be turned on;

Microcontroller development board can be used as modules that can be used as home appliance control;

Control DC or AC signal, you can control 220V AC load;

There is a normally open and one normally closed contact;

Blue KF301 terminal connected to the control line is more convenient