Product Parameter: Type: Optical Level Sensor Power supply: 5V DC Material: PC or PSU Size: 1.46*1.46*2.57 Operating Temperature: -20~ +65 °C Storage Temperature: -40~ +85 °C Working Life: 50000 Hrs 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. Application: Water dispenser Water heater Humidifier Medical devices or equipment Electrical appliances and equipments etc. requiring liquid-level control