I needed a simple LED indicator showing that a particular voltage level had been reached—specifically, that a capacitor had charged to a particular potential. I was convinced that there must be a way ...

APEM's Dual Icon indicators use green and red filters combined with vivid LED lighting to produce a 120° viewing angle.

This LED DC voltage indicator circuit is a voltmeter, rather than simply a battery tester. As such it may measure voltages as low as 3V. It utilizes venerable LM741 operational amplifiers applied as ...

They are rated IP67 (NEMA-4 and 13) against dust and moisture and can be used in hazardous environments. Features include lenses in anodized aluminum with illumination windows, or with plastic ...

Capacitive Pushbutton Sensor Switches and Indicators from AutomationDirect are easily installed via M8 connections, use touch control with no mechanical pressure required and offer visual touch ...