Revision [24751]
This is an old revision of Relaisboard made by ToBo on 2017-07-26 23:26:55.
Relais Board
Double, tripple or quad relais module from dx.com, Alibaba or Amazon
1. Using 5 V control voltage from Arduino
For 5 V systems like Arduino connect Vcc to 5 V and set the JD-VCC jumper.
The inputs are low-active. The microcontroll must deliver a low level to activate the relais.

2. Using 3.3 V control voltage from Raspberry Pi
For 3.3 V systems like Raspberry Pi remove the JD-VCC jumper. Conect 5 V to the JD-VCC side of the jumper.
Connect 3.3 V to VCC.
3. Circuit

4. Relais ratings

SRD-05VDC-SL-C says
- SRD: relais model
- 05VDC: Voltage at JD-VCC should be 5 V
- S:Sealed type
- L: coil power consumption is 0.36 W
- C: Contact form type C