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.

The Dual Icon 14 mm panel-mount LED indicators from APEM are bi-color indicators designed to provide dual-state visual ...

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 ...

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 ...