They work as they should. They are very inexpensive. The only problem I see is that the address on the silkscreen is wrong. In my opinion a small compromise for the small price. I downloaded an I2C scanner sketch that shows the address in the serial monitor.
π MCIGICM 2 Channel DC 5V Relay Module: Optocoupler Low Level Trigger Expansion Board for Arduino UNO R3, DSP, ARM, PIC, AVR, STM32, Raspberry Pi
11 Review
REXQualis Comprehensive Starter Kit with Arduino MEGA 2560 & Detailed Tutorial for Arduino IDE Compatibility
11 Review
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
LAFVIN Super Starter Kit for Arduino R3 Mega2560 Mega328 Nano with Detailed Tutorial - Compatible with Arduino IDE
11 Review
Comprehensive 500pcs Laptop Screw Kit Set for π© IBM HP Dell Lenovo Samsung Sony Toshiba Gateway Acer
12 Review
Glarks 660 Pieces Phillips Assortment Motherboard
10 Review
π§ Premium Repair Replacement Screws & Tools for MacBook Pro Retina 15"/13" - Complete Bottom Case Set
10 Review
M.2 Screw Kit: Easy Mounting for NVMe SSDs on ASUS Motherboards
19 Review