The relay contact header looks like 0.2″ (5.08mm) to me. Probably to fit screw terminal blocks. All good for low DC voltages. If you want AC switching then a SSR would be better.

Seemingly, this ESP-01 Wi-Fi Relay can be used as a smart on/off switch for handling any device connected to it. When a pre-programmed ESP module is inserted into the relay board, it not only serves ...

What is the point of reviewing a cheap timer module, especially if it is based on the ubiquitous 555 timer chip? Recently I got an ‘updated’ version of the common 555 timer relay module. This time it ...

The Dual Relay Module T2 supports 24V DC and above. The Matter compatibility of the Duel Relay Module T2 requires a Matter-compatible Aqara hub (e.g., Aqara Hub M2, ...

The relay repeater module accepts single contact closure inputs from logic solver trip outputs including the company's STA Safety Trip Alarm and the SPA2 Programmable Limit Alarm Trip. With three ...

The HR5S safety relay module is the first on the market designed specifically to meet ISO 13849 Category 2 requirements. Designed for Safety Category 2 Applications Safety relay modules, like the HR5S ...

IDEC Corporation, Sunnyvale, CA, March 2, 2021 — IDEC Corporation announces the release of its new HR5S safety relay module. This latest addition to IDEC’s family of safety devices gives designers and ...