In this post we are reviewing the ESP-01 Wi-Fi Relay Module. It is one of the cheapest smart switches you can purchase currently for making smart home, internet of things, and other wireless do it ...

The SRM Safety Relay Module has been certified ... that can be mounted on either a 32 mm G-type or 35 mm top-hat DIN-rail, plus front-panel visual diagnostics, with three LED indicator lights ...

Relay modules are input/output devices that mount on DIN-style rails. The rails typically reside in enclosures and hold controls for managing factories, buildings, and machines. As the space ...

He mentioned a site about relay ... modules. A lot of computers based on discrete switching elements worked this way: you had a PCB that contained some number of a basic gate (say, a two input ...

Higher amperage relay output modules and an 8-point input simulator module are now available from AutomationDirect for the Click series stackable micro brick PLCs. The Click C0-04TRS-10 ($54.00) is a ...

Providing eight SPDT, high-current Form C relays directly switching 6A loads at 250V ac and 100V dc, the Seal/O-520 relay and optically isolated input module also has eight nonpolarized inputs for ...