5VDC 1 Way 1 Channel Relay Module (Transistor Version)
Price in Sri Lanka

This 5V relay module features a single electromechanical relay controlled via a transistor driver circuit. It allows low-power microcontrollers to switch high-current AC or DC loads safely. Ideal for automation, home control, and embedded switching applications.

Specifications

• Relay Type: 1-channel electromechanical
• Control Voltage: 5 V DC
• Trigger Signal: active HIGH (via transistor)
• Relay Voltage Rating: 5 V coil
• Load Capacity:
  - AC: up to 250 V 10 A
  - DC: up to 30 V 10 A
• Driver Circuit: NPN transistor with flyback diode
• Input Pins: VCC, GND, IN
• Output Terminals: NO, COM, NC
• Indicator: onboard LED for relay status
• Isolation: no optocoupler (transistor-driven)
• Mounting: pre-drilled holes for enclosure or baseplate

Features

• Transistor-driven relay switching for microcontroller compatibility
• Supports AC and DC loads up to 10 A
• Onboard LED indicator for relay status
• Screw terminals for secure load connections
• Common use cases:
  - Arduino and ESP32 relay control
  - Home automation and appliance switching
  - Motor and solenoid control
  - STEM kits and embedded switching projects