Never run out of fuel unexpectedly again with this Propane Tank Level Indicator. The magnetic sensor mounts to the bottom of the tank and accurately measures the propane level. It works on 20, 30, and 40 lb DOT cylinders and on horizontal RV tanks. The sensor is Bluetooth-enabled so you can get updates on your device automatically.

• Wireless connectivity with Bluetooth 4.0 or better
• Adjustable low fuel level alert
• Fuel level accuracy to within 1%
• Free app download