Why is the green light ON when STS Measuring Instruments system is not attached to a vehicle or drum?
- NnashjessicaJul 28, 2025
If the green light is ON when the STS Measuring Instruments system is not attached, check for: incorrect installation of lens caps (Red on the left, Green on the right); a missing or damaged isolating washer on the clamp; stainless steel points set at an improper depth and are touching; or a fault/damage in the controller wiring.