Review on π Huayao 2pcs 4 Channel 5V Relay Module with Optocoupler for Arduino UNO R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 Raspberry Pi by Josh Elkins
It works. It may have an additional ground contact.
Relay is working properly. Solder joints are smooth and clean. I would like to see a ground pin next to VCC for the output side of the optocoupler. I'm not sure if the ground is isolated or not as you need to use the ground on the signal input side.
- Rugged finish
- Not all will fit
New products
Comments (0)
Top products in π₯οΈ. Single Board Computers
π Ultimate BBC Micro bit Sensor Starter Kit: Keyestudio 37-in-1 Box with Tutorial, Compatible with V1.5 & V2, Gift for Kids and Adults (Microbit Board Not Included)
11 Review
GeeekPi Raspberry Pi Cluster Case with Cooling Fan and Heatsink for Pi 4 Model B, 3 Model B+ & 3/2 Model B
11 Review
55" TV LG OLED55C2RLA 2022 HDR, OLED, dark titanium
38 Review
REXQualis Comprehensive Starter Kit with Arduino MEGA 2560 & Detailed Tutorial for Arduino IDE Compatibility
11 Review
Another interesting products
MacBook Retina 13-inch (A1425, A1502) and π© 15-inch (A1398) Bottom Case Screw Set with Pentalobe Screwdriver
11 Review
uxcell 3.5" HDD Screw Black 200pcs for Computer PC Case - Flat Phillips Head - 6#-32 - Hard Drive Fasteners
10 Review
Glarks 660 Pieces Phillips Assortment Motherboard
10 Review
Comprehensive 500pcs Laptop Screw Kit Set for π© IBM HP Dell Lenovo Samsung Sony Toshiba Gateway Acer
12 Review