TLP281 4-Channel Opto-Isolator Module

The TLP281 4-Channel Opto-Isolator Module is a reliable signal isolation board designed to safely connect microcontrollers with high-voltage or noisy circuits. It uses four independent TLP281 optocouplers to provide complete electrical isolation between input and output stages, protecting sensitive control systems from voltage spikes, surges, and ground loop interference. Each channel operates independently, making it ideal for multi-signal applications such as PLC interfaces, industrial automation, relay driving, and motor control systems. The module supports both 3.3V and 5V logic levels, ensuring compatibility with popular platforms like Arduino, ESP32, Raspberry Pi, and STM32 boards.

• Optocoupler IC: TLP281
• Isolation Voltage (Viso): 2500V RMS (minimum)
• Channels: 4 Independent Channels
• Collector-Emitter Voltage (VCEO): 80V (Max)
• Current Transfer Ratio (CTR): 50% to 600%

Features:

• 4 Independent Isolation Channels – Four separate TLP281 optocouplers in one compact board
• High Isolation Protection – Up to 2500V RMS isolation voltage
• 3.3V & 5V Logic Compatible – Works with most modern microcontrollers
• Noise & Ground Loop Protection – Prevents voltage spikes from damaging control circuits
• Compact & Easy to Integrate – Standard pin headers for quick installation

Package Includes:

1 x TLP281 4-Channel Opto-Isolator Module