Modul relay/relay module 1 channel 12v with led indicator

Relay Module 1 Channel 12V with Led Indicator 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 contact; 8. Blue KF301 terminals to the line 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