Product details
Features:
- 2 LEDs to indicate when relays are ON.
- Works with logic-level signals from 3.3V or 5V devices
- Option to make it a high-level or low-level trigger
- Opto-isolation circuitry
- Module with diode current protection and short response time
- Around the board with 4 mounting holes, hole diameter 3. 1 mm, easy installation and fixing
Pinout:








