Manufacturer supplys a new 1 -way relay module 5V low -level trigger relay expansion board

This module 5V relay, low -level trigger

Product introduction:

1. This module meets international security standards, and there is an isolation slot in the control area and the load area;

2. Use relays;

3. With power and relay instructions, the absorption is bright, and the disconnection is not bright;

4. When the signal input end has a signal, the public end and the usual start will be turned on;

5. It can be used as a single -chip microcomputer development board module, which can be used as an appliance control;

6. Control DC or AC signals, you can control 220V AC load;

7. There is a frequent opening and one constant closed contact;

8. The blue KF301 terminal is more convenient.

For descriptions of high levels and low level triggers, please take a look at friends who do not understand:

High -level trigger refers to a voltage trigger method between the signal input terminal and the ground. It can be understood as a way to trigger the signal input terminal and VCC positive pole short circuit;

Low -level trigger refers to the trigger method of the voltage between the signal input terminal and the ground. It can be understood as a way of the signal input terminal and the GND negative short circuit trigger