A87 4 roads opto-isolation module high-low level expansion board
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This 4-channel opto-isolation module provides electrical isolation between a low-voltage controller (e.g., 5V microcontroller) and high-voltage equipment (up to 24V). Using an opto-isolator IC with four LEDs and photodiodes, it allows safe control of high-power systems from low-voltage logic. Ideal for industrial automation, Arduino projects, and noise-sensitive applications.
add_circle The Upside
- check Provides galvanic isolation for safety and noise reduction
- check Easy to interface with Arduino and other MCUs
- check Compact size fits into tight spaces
remove_circle The Downside
- close Limited documentation or support from generic manufacturer
- close Maximum input voltage 24V may not suit higher-voltage applications
- close No screw terminals; requires soldering or header pins
Specifications & features
Key features
- check_circle 4 independent opto-isolated channels
- check_circle Low-level control of high-level signals (up to 24V)
- check_circle Maximum output current 500mA per channel
- check_circle Compact PCB size: 25x24mm
- check_circle Input compatible with 5V microcontrollers and Arduino
Specifications
Channels
4
High Voltage Side (HVCC)
Up to 24V
Input Voltage (Low Side)
5V (typical)
Output Current per Channel
500mA max
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