This is our 4-channel 5V relay module, which can be directly controlled by a wide range of microcontrollers such as Arduino, PIC, and ARM. Four relays are included in this module, with "NC" terminals meaning "Normally Connected to COM" and "NO" terminals meaning "Normally Open to COM". This module is also equipped with 4 LEDs to show the status of the relays. It is Active HIGH!
Features:
- 4 mechanical relays with LED status indicator.
- Each relay has both "NC" and "NO" terminals.
- VCC is the logic power supply: 5VDC
- IN1, IN2, IN3, IN4 are the activation inputs for each relay; a logic 1 (5V) activates the relay, a logic 0 (0V) deactivates the relay.
