Product description: 1. The module complies with international safety standards, control area load area isolation groove; 2. Genuine relay Songle; 3. With the power and relay action instructions, pull bright disconnect does not shine; 4. When a signal in the signal input terminal, the common terminal and the normally start conduction; 5. Microcontroller development board can be used as a module that can be used as a home appliance control; 6. The control of the DC or AC signal, can control 220V AC load; 7. There is a normally open and a normally closed ; 8. Blue KF301 terminals to the of control is more convenient.
Description of the high and low trigger: High level trigger is a trigger voltage between the signal input and ground can be understood as a way of the signal input terminal and VCC cathode short trigger; Low trigger means is the voltage between the signal input terminal and the ground for the OV trigger mode can be understood as a way of the signal input terminal and GND negative short trigger
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