5V 1 Channel Relay Module - High/Low Level Trigger
5V 1 Channel Relay Module - High/Low Level Trigger has a 5-10 day lead time before dispatch. Order will only be sent once all items are available for delivery.
5V 1 Channel Relay Module - High/Low Level Trigger
This 5V 1 channel relay module allows a microcontroller such as Arduino, ESP32, Raspberry Pi, or other 5V logic systems to safely switch high voltage or high current loads using optical isolation. The onboard SMD optocoupler electrically separates the control circuit from the relay switching circuit, helping protect your microcontroller from voltage spikes, electrical noise, and back EMF generated by inductive loads. This version supports both high level and low level triggering via an onboard jumper, making it compatible with a wide range of development boards and control systems.
Electrical Specifications
- Operating Voltage: 5V DC
- Trigger Current: 5mA
- Maximum Switching Load AC: 250V 10A
- Maximum Switching Load DC: 30V 10A
- Relay Outputs: NO Normally Open, NC Normally Closed, COM Common
- Module Dimensions: 50mm × 26mm × 18.5mm
Pin Configuration
- DC+ Positive power supply VCC
- DC- Negative power supply GND
- IN Control signal input high or low level selectable
- NO Normally Open relay interface
- COM Common relay interface
- NC Normally Closed relay interface
- H L Jumper pins that switch between High and Low level trigger
Key Features
- High / Low Level Switching: Selectable high level or low level trigger via onboard jumper for flexible control compatibility
- SMD optocoupler isolation: Improved protection by utilising a SMD optocoupler to isolate connections, reducing interference, and stablising switching performance. An optocoupler relay module combines a mechanical relay with optical isolation to safely control high voltage loads from low voltage microcontrollers.
- Fault tolerant design: Prevents unintended relay activation if the control signal line is disconnected
- Integrated LEDs: Integrated green power indicator LED and red relay status LED for clear visual operation feedback
- Screw terminals: Clearly labelled screw terminals for secure and convenient wiring connections
- Compatibility: Arduino, ESP32, Raspberry Pi, STM32 compatible
Typical Applications
This relay is ideal for Arduino projects, ESP32 systems, home automation, industrial control, and safely switching lights, pumps, motors, solenoids, and other AC or DC loads. This 5V 1 channel optocoupler relay module is designed for reliable single device control where electrical isolation and stable performance are required.
Explore More Relay Modules
If you're looking for a relay with a different amount of channels (switchable relays), check out our 5V Relay Modules collection. For a 12V variant of this relay, look through our collection of 12V Relay Modules collection.
