Advanced Connectivity: Easily monitor water or oil levels in your tank using our ME201W sensor, which connects seamlessly to your mobile device via WiFi. Stay informed with instant notifications and alarms. Eco-Friendly Solar Power: Powered by a robust solar panel, this sensor ensures uninterrupted operation without the need for external power sources, making it ideal for remote locations. Versatile Monitoring: Suitable for both water and oil tanks, the ultrasonic technology provides precise measurements, avoiding the need for manual checks and ensuring efficient resource management. Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Color: As Shown Material: ABS Package Contents: 1 * Water Level Meter Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.