• Operating at 5V with direct microcontroller input.
• Operates at 3V or 5V.
• Switches AC or DC high voltage loads.
• Handles 110V or 220V AC (lights, fans, motors).
• Red LED shows relay status.
• Includes normally closed and normally open (NO) contacts.
  

Features:

• Input signal can come directly from a microcontroller
• Works at 3V or 5V to control relays
• Can switch a variety of AC or DC high voltage loads
• Suitable for SCM development and home appliance control
• 5V~12V TTL control signal for DC/AC control
• LED indication of relay ON
• Contact rating: 7A at 240V AC, 
• Direct input from 3-5V microcontroller for relay control
• Provision of 2x3Pin male header for wire connection
• Powered from external 5V or from the male header
• Relay contact is isolated from the driven circuit

The 5V 1-channel relay module works with a 5V to 12V TTL control signal. It is perfect for controlling home appliances and for use in microcontroller projects. the 5V relay module can handle a 220V AC load, so you can use it to control motors, LED strips, or other devices.

This single-channel relay acts like a regular switch, keeping its contacts separate from the circuit it controls. It has an LED light to show when the relay is ON and accepts input from a 3-5V microcontroller.

The output terminals connect to the relay, and there’s a 2x3-pin male header for easy wiring. You can power it with an external 5V source or through the male header. The 5V relay module can handle up to 7A at 240V AC.

Note: It is important that the microcontroller shares ground with the relay board along with other control signals else it will not be able to control the relay.