We will be closed on November 25, 2021 and November 26, 2021 in observance of the Thanksgiving holiday. We will resume normal operations on November 29, 2021. Wishing you a safe and happy holiday from all your friends at SparkFun!
Receive a free SparkFun USB Thumb Drive with every order this weekend. Details.
Track My Order
Frequently Asked Questions
International Shipping Info
Mon-Fri, 9am to 12pm and
1pm to 5pm U.S. Mountain Time:
November 23, 2009
Tutorial - Controllable Power Outlet
about 12 years ago
It's probably worth mentioning that you are putting the relay across the active, hot or live line in the extension cord, which may be black, red, brown or even blue depending on your country and region.
No public wish lists :(