Maximize uptime and enhance driver safety with the STANDARD IGNITION EFL166 2-Terminal Ambient Light Sensor. For over 100 years, STANDARD IGNITION has been the go-to supplier for professional technicians, providing high-quality, reliable parts that meet or exceed OE specifications. The EFL166 is no exception. This critical sensor ensures your fleet vehicles automatically adjust headlights and interior lighting based on surrounding light levels. This feature improves driver visibility in low-light conditions, reducing the risk of accidents and enhancing overall safety. Built with precision manufacturing and multiple layers of testing, the EFL166 offers superior durability and performance, minimizing downtime due to sensor failure. Its simple 2-terminal design ensures straightforward installation, reducing labor costs and maximizing your fleet's efficiency. Investing in the STANDARD IGNITION EFL166 translates directly to increased safety, improved operational efficiency, and reduced maintenance expenses for your fleet. Don't compromise on quality – choose a sensor that performs as reliably as your drivers. Choose STANDARD IGNITION.