Signal Construct LED Prominent Panel Indicators 5mm Snap-Fit – Signal Construct SKRD05104, 24V DC yellow LED panel indicator with a 5mm body for snap-fit mounting. The lamp has an external reflector and is finished in black. The frosted surface of the lens gives good on/off contrast and high light transmission. Signal Construct SKRD05104 5mm 24VDC Yellow LED Indicator Lamp