The switch handles high power up to 100 watts and low power down to 30 mAmps.
February 4, 2015 - HSI introduces the HSR-637W universal Form C reed switch. The switch handles high power up to 100 watts, and low power down to 30 mAmps, all while maintaining low and stable contact resistance.
The HSR-637W’s load-handling capabilities make it a good fit for both fluid controls processing and the reed relay industry, serving applications such as broadcasting and video equipment, security, mobile phone base stations, instrumentation, process control, automatic test and measurement equipment, as well as industrial applications.

