GE-1711 & GE-1797 Engine Temperature Sensors (ETS) Amphenol Advanced Sensors GE-1711 and GE-1797 Engine Temperature Sensors (ETS) utilize an existing field-proven design to monitor the temperature of coolant being pumped around a vehicle's engine block. These sensors notify the driver if the engine starts to overheat so the vehicle can be stopped and the engine switched off before any permanent engine damage occurs. Amphenol Advanced Sensors GE-1711 and GE-1797 Engine Temperature Sensors offer a fast response time, high accuracy, long-term stability, and +180°C maximum operating temperature.