4 Channel Optocoupler PC817 Isolation Board With 3.3V And 5V Drive To 3.6-30V Output Voltage Converter Module Photoelectric Isolation High Noise Rejection Go-To Arduino DIY Projects
✔️ 4-channel opto-isolated board, 3.3/5V drive to 30V outputs, single unit
This 4-channel optocoupler isolation board uses PC817 devices to safely translate low-voltage control signals into higher voltage outputs, keeping your microcontroller separate from high-voltage circuits. It's a handy module for Arduino projects, relay driving, and noisy industrial environments.
✅ Input drive voltage: 3.6-24V✅ Output voltage: 3.6-30V
✅ Independent channels with jumper for high or low output
✅ Pulse input limit under 4 kHz for reliable operation
✅ Independent 4th channel plus PC817s allow simultaneous control of different voltages
💡 What is an optocoupler isolation board used for in hobby electronics projects? This device provides galvanic isolation between control signals and power circuits, boosting safety and reducing interference. - Handy for shielding microcontrollers when driving relays or high-side switches - Great for protecting circuits in noisy environments and preventing ground loops - Useful for level shifting from 3.3V/5V logic to higher voltage loads - Helps reduce voltage spikes from affecting sensitive electronics