Dual Relay Module

Five stars

I purchased this for projects with my Raspberry Pi and it works exactly as it is advertised. This is a great hobby add-on board for a reasonable price. I should also mention that there are tons of projects explaining how to use this device in particular with the Raspberry Pi. Google is your friend.

Everything is well labeled and easy to manipulate with tools

This relay block works perfectly. Everything is well labeled and easy to manipulate with tools. The terminal screws are pretty sturdy for something that small

Perfect with Arduino

This is very affordable and easy to use. I use these with my Arduino to control higher voltage and current devices that the Arduino couldn't handle by itself. Great device!

Works great with Raspberry Pi

Awesome relay board for use with the Raspberry Pi and other embedded systems. It is fast and has normally open and normally closed contacts. I can easily think of 100 uses for this relay module.

Does exactly what its made for

Very nice board, works perfectly with the raspberry pi and nanodlp for switching the UV LED backlight on and off. Nice thick PCB and has heavy copper traces.

Works with the 3.3V outputs of a NodeMCU esp8266

This relay module works directly with the 3.3V outputs of a NodeMCU esp8266. I use the same module with an Arduino Uno for about 6 month and the relays switch around 100 times per day, so far no problems.

Operate with 5v and 3.3v !

Works great for my project, was able to safely turn on 9 light bulbs with a 5v output from my Arduino Mega and even went ahead and tried 3.3v from a smaller proto board no problem. "Clicking" noise doesnt bother me. I like being able to hear my project work. On board LED helpful for troubleshooting. Black board looks great!

Good product at a good price

This compact relay board provides excellent control capacity for the Arduino, and with optical isolation it keeps the Arduino safe from high power circuits. I liked it well enough to buy a bunch of them for now and future use.

Quality product

Quality relay. Upgraded my project with this and simplified my wiring. Use it everyday with no issues.

Lots of value, well made

Very well designed and well made. Works perfectly.

Great Product - Well built and rugged - Does the Job!

I am extremely happy with this board. It works flawlessly with the Arduino. It is responsive and VERY easy to use.

Works great with Arduino

I used this along with an Arduino UNO and it works great! The relay is powered exclusively by the Arduino and I have had no issues whatsoever. The packaging is very basic and the relay does not come with instructions. Fortunately, the relay is a common design and so it is very easy to find documentation for it all across the Internet. I would definitely recommend this to others who are interested in switching higher voltages with an Arduino.