Arduino Relay Shield
The Relay Shield (ie, four 5V relay module) is a small current signal control equipment commonly used power electronic modules, enabling high-power single-chip control devices, widely used in the SCM system to make smart home project; and can be directly plugged onto an Arduino.
Module features are:
- 4 relay
- Standard Arduino Shield interfaces and shape
- Can continue to stack other Arduino expansion boards
- 3 M3 screws positioning holes for easy installation
- High drive (5V or 3.3V) normally open contact closure
- Onboard relay indicator (red)
