Parameter: Type: Optical Level Sensor Protection: IP67 Material: PC Accuracy: ±1mm Thread:M14x1 Output signal:Analog Power supply: 5V DC Operating Temperature: -20~ +65 °C Storage Temperature: -40~ +85 °C Working Life: 50000 H Products Features: 1. No mechanical moving components and with high reliability. 2. Small in size and low in cost.  3. High liquid level control precision and can be installed from any direction 4. Satisfying the requirements in Safety Standards. 5. The sensor itself satisfies RoHS requirements. 6. Waterproofing standard IP67. 7. Accuracy is between ±1mm.