1 Channel 5V Optical Isolated Relay Module

• The Relay Module 1 Channel 5V with High/Low Level Trigger Selector is a highly reliable and versatile switching device designed to control high-voltage and high-current circuits using low-voltage control signals. Operating at 5V DC, this single-channel module is ideal for integration with microcontrollers, such as Arduino or Raspberry Pi, or other digital control systems requiring precise control of high-power loads.
• Its robust design and user-friendly features make it an excellent choice for technical writers documenting electronics projects for e-commerce platforms, catering to both hobbyists and professional engineers.

Input Interface:

• DC+ : Connect the positive pole of the 5V power supply.
• DC- : Connected the negative pole of the 5V power supply.
• IN: Signal trigger input (3.3V to 5V, high or low level signal selected via a jumper).

Output Interface:

• NO: The normally open interface.
• NC: The normally closed interface.
• COM: The common interface for both normally open and normally closed.

High/Low level Trigger Selection Jumper:

• If the jumper is placed between COM and L, the relay uses LOW level trigger.
• If the jumper is placed between COM and H, the relay uses HIGH level trigger.

How it works

High Level Trigger:

• When IN is LOW level signal, the NO does not connect with COM and the NC connects with COM.
• When IN is HIGH level signal, the NO connects with COM and the NC does not connect with COM.

Low Level Trigger:

• When IN is LOW level signal, the NO connects with COM and the NC does not connect with COM.
• When IN is HIGH level signal, the NO does not connect with COM and the NC connects with COM.