Product Description
3-way Relay Expansion Board
Features:
- Based on Raspberry Pi 40pin GPIO interface, it is suitable for Raspberry Pi series motherboards.
- With high-quality relay, it is allowed to access the load: ≤5A 250V AC or ≤5A 30V DC.
- With optocoupler isolation, avoid interference from high-voltage circuit.
- With relay indicator light, it is convenient to check the working state of the relay.
- With relay selection jumper cap, it is convenient to switch other pins of raspberry pie for control.
Introduction to interface
1. Raspberry pigio interface
Convenient access to raspberry pie
2. Relay terminal
Convenient connection to external control line
Patch cord description
3. Relay control pin selection jumper
Short jumper: Connect to the I/O specified by the sample program.
Disconnect jumper wire: You can use connecting wire to access custom I/O instead.
Device introduction
4. Relay
5. Optocoupler
PC817 optocoupler chip
6. Relay working indicator light
The LED is on, the normally closed end of the relay is off, and the normally open end is closed.
LED is off, the normally closed end of the relay is closed, and the normally open end is disconnected.
7. Power indicator light
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Raspberry Pi
3-way Relay Expansion Board
Product ID: LP522
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