Active low relay operation enables efficient power management and circuit design
Opto-isolated digital input provides enhanced protection against electrical noise and interference
Supports both 5V and 3.3V microcontrollers for broad compatibility
LED indicator shows relay status for quick visual feedback
Compact PCB design fits easily into tight circuit spaces
Summarized by Shop
Active low relay board featuring 24V relays capable of being switched on-off by an opto-isolated digital input. The relays are controlled by a microcontroller connected to the output pin and require a minimum 1V to switch the inputs ON. Suitable for 5V and 3.3V devices, these boards are perfect for Raspberry Pi, Arduino, PIC and various o