Relay module (SRD-05VDC)
1-channel relay board · 5 V coil (SRD-5VDC) with transistor, flyback diode and indicator LED · input active LOW (pull IN to GND to switch on) · contacts 10 A 250 V AC / 30 V DC: COM, NO, NC
Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Typical part: 1-channel relay module (SRD-05VDC-SL-C)
Pins
- VCC
- GND
- IN
- COM
- NO
- NC
Ratings and limits
| Coil | 5 V, ≈ 70 mA |
|---|---|
| Input | active LOW, ≈ 2–4 mA |
| Contacts | 10 A 250 V AC / 10 A 30 V DC |
How to use it
The board already has the driver transistor, flyback diode and LED. Power VCC from 5 V; a 3.3 V pin can drive IN on most boards. Mains on the contacts needs an enclosure and proper wire.