If you've ever wondered how electronic devices manage to control circuits with precision and safety, you're thinking about the magic of relays. Relays act as the unsung heroes in many of our devices, ...

Shelly’s Gen4 relays start at $18 and can automate anything that’s wired, from light switches and garage door openers to sprinkler systems and appliances. Designed to fit inside electrical boxes, ...

Relays are electromechanical devices that use a magnetic solenoid to actual a switch. When current is passed through the solenoid coil, it produces a magnetic field. The magnetic field is strengthened ...