4-Channel Relay Shield v0.9b for Arduino Uno
RM17.90
This is a shield equipped with relays for Arduino to control high power loads up to 3A.
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Description
This is a relay shield that has 4 relays for controlling high current loads up to 3A with Arduino Uno or Mega. There are onboard NO (Normally Open) and NC (Normally Closed) terminal connectors for controlling devices that could not be directly controlled by Arduino’s digital IO pins. Relay can be useful in switching AC appliances such as fan, lamp, motors, solenoid valves, electromagnets, coils, etc.
The standardized shield form factor enables a smooth connection with Arduino Uno, Mega and compatibles. The shield also has 4 LED indicators to indicate the on/off state of each relay.
Features
- Operating voltage : 5V
- Has ICSP extension pins
- 4-channel relay fit on Arduino Uno, Mega form factors
- LED indicators for each relay output
- Load capacitor : 3A 125VAC / 3A 24VDC (each relay)
- Has extension pins for IO
Wiring
| Label | Meaning | Connection |
| Relay 1 | 1st channel relay | Connected to Arduino digital pin 7 |
| Relay 2 | 2nd channel relay | Connected to Arduino digital pin 6 |
| Relay 3 | 3rd channel relay | Connected to Arduino digital pin 5 |
| Relay 4 | 4th channel relay | Connected to Arduino digital pin 4 |
| NO1/2/3/4 | Normally-Open terminal | Connect device to this for switching ON when relay is activated |
| COM1/2/3/4 | Common terminal | Connect to power source |
| NC1/2/3/4 | Normally-Closed terminal | Connect device to this for switching OFF when relay is activated |
Additional information
| Weight | 30 g |
|---|---|
| Dimensions | 72 × 52 × 30 mm |
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