Say goodbye to hazardous high voltage wiring and create the Internet of Things with safe, reliable power control. The IoT Power Relay from Digital Loggers is custom designed to fit your every need when developing projects with Raspberry Pi, Arduino, Adafruit Feather, or any other microcontroller board! This beefy relay power module is well designed and is great when you need to control more than one outlet at a time.
A single input signal to switch four outlets: 2 normally on + 2 normally off.
Universal control voltage 3-60VDC or 12-120VAC, or connect directly to a 12V, 48VDC, or even 120VAC circuit.
Optical isolation, relay, hysteresis and de-bounce protection for added safety.
A large MOV used to clamp surges for clean 90-140 AVC power.
Durable SPDT control relay rated at 30/40A. More than 400k operations at 12A or 2million+ at 5A.
A 12A thermal safety circuit breaker switch prevents overloads.
Standard 24″ C13 detachable cord included.
This power relay is professionally built and tested.
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I have one of these and it’s pretty great. Because it can be triggered from a wide range of inputs, including (low voltage) AC, you sometimes don’t even need a microcontroller to use it usefully.
It’s important to point out that this is not four individually controllable outlets. This is obvious from the markings on the front but bears repeating. One group of two outlets is normally on, and the other normally off (there is only one relay). If you’re careful and adventurous, you can modify the “normally on” side to be “always on” and thus provide power to the control circuit for the other side of the relay. Note that this bypasses the surge protector, which is a bad idea, so only modify if you know exactly what you’re doing, are comfortable with working on mains voltage devices, and the consequences thereof.
The product page for this item on “a large online retail site who started as a book store” has more hints about modifications.