The Shelly 1 Gen4 is a 16A dry contact relay—perfect for integrating legacy systems or low-voltage circuits into a smart setup.

“Dry” switching means that the goodie current being switched is “negligible”, that the current being interrupted and resumed is negligibly small. What constitutes negligibility may be open to debate ...

Two simple tests can go a long way toward ensuring the reliability of today�s reed relays. The reliability of today�s dry-reed relays can approach or exceed that of electronic components ...

Combination supervised alarm/relay module that offers surface mount technology and flash memory. The AIO-168 alarm and relay processor module provides 16 zones which meet UL Grade A analogue line ...

Two Wiegand reader inputs Two solid state dry contact relays Integrated lock power (12V DC, 500mA) Four configurable inputs Infrared motion sensor Up to 100,000 card holders Built-in diagnostic LCD ...