Indicator Light Installation


The Subsea LED Indicator is a simple LED light with high pressure capability! It comes in a penetrator form factor for easy installation on any of our Watertight Enclosures and it comes in four colors: white, blue, green, and red! It operates on 3-20v and each light draws up to 30mA when used at 20v. A built-in resistor makes it easy to use without any additional parts.

Parts and Tools

You Will Need


To install the indicator, lightly grease the provided O-ring with silicone grease and install over the cable and bolt. Insert to a 10mm hole and tighten the nut to secure the indicator. We recommend using a penetrator wrench to ensure it’s securely tightened.

Example Code


This example uses the Arduino Servo library to control the light brightness. This can use any pin on the Arduino board as the “indicatorPin”. Note that the dimming functionality will only work on a PWM pin.

If you’ve never used Arduino before, we suggest checking out some tutorials!

byte indicatorPin = 9;

void setup() {
	// set up pin mode

void loop() {
  // turn light on

  // wait one second

  // turn light off</p>

  // wait one second</p>

  // turn light on, 50% power</p>
  analogWrite(indicatorPin,127); // values from 0-255

  // wait one second