Hello Dear,
Good day!

Are you interesting in BLE All-in-One Ultrasonic Fuel Level Sensor for Fleet Fuel Monitoring?
* No Drawing Holes in Tank
* Support Fuel Theflt Alarm I/O output (5V)
* Support Diesel/Gasoline/Lube Oil, etc.
* Support Metal/Iron/Stainless steel/Aluminum/Plastic thank
* Output Interface:  RS232/RS485+Analog+Bluetooth
* Mobile IOS/Android App configuration & Calibration

Compatible with Teltonika, Xirgo, Queclink, Calamp, DigitalMatter,GeoTab, Meitrack, Jimi, Streamax, Howen and most M2M hardware.
Would you like try some sample for test?

Contact me today and let's talk for more.sales1

Best Regards!