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2CH Active H/L 3V OptoCoupler Relay Module
- Brands China Code: BB-AHALR-3V-02
Relays are always good to have especially for electronics projects. The relay itself offers two main benefits:
This is not an ordinary Relay breakout. It comes with 2 (two) channels 3.3V activation relay, ready to control 250VAC at 10A. Extra isolation with optocoupler at the front of control and the activation logic for the relay is configurable via a mini jumper. In simple words, the relay can be configured as 3.3V(High) activation or 0V(Low) activation. This is the universal Relay breakout board and we like it.
It comes with three (3) screw terminals for each relay output:
And also screw terminals for the control signal from a microcontroller such as Arduino or micro:bit. The control signal is optoisolated, protected. It even comes with a power and activation indicator LED for each channel of the relay. Easy to use and suitable for beginners, and of course students too. For the input power and signal:
If you need to control AC or high current, high voltage load, this will be the perfect board.
Note: We notice the DC+ and DC- need to be 3.3V and the In1 and In2 (control signal) needs to be 3.3V or Ground to make it works properly.