Tattle Tale
Shown below is a Tattle Tale LED device.

Option 1

Option 2

Option 3
Features:
Voltages: 10V AC/DC, 12V AC/DC, 24V AC/DC, 120 VAC, or 240 VAC
Colors: Red, Orange, Yellow, Pure Green, Blue-Green, Blue, and White
Connectivity: Flangemount
Options: Option I, Option II, Option III, fuse, dual fuse