4 Channel 5V Relay Module with Optocoupler

Specifications and Features:-

• One normally closed contact and one normally open contact
• Channel: 4 channel
• Relay Operating Voltage: 3.3V to 5V
• Triode drive, increasing relay coil
• High impedance controller pin
• Pull-down circuit for avoidance of malfunction
• Power supply indicator and Control indicator lamp
• Power supply and relay instructions, lit, disconnect is off;
• Input signal, signal, common Terminal and start conducting;
• Useful for appliance control;
• DC or AC signal, control, you can control the 220V AC load;
• There is a normally open and one normally close contact;
• The module is compliant with international safety standards, control and load areas isolation trenches.