Newly updated for better range, battery life and accuracy! 

From a proud American family business, AppWeigh is the original Bluetooth enabled weight sensor and app for air suspension semi trucks and trailers. A major advancement away from traditional onboard load scales, AppWeigh “Smart Scales” clearly display your truck weight on your smart phone to help you load safely and legally. Combining the latest in Bluetooth and sensor technology, the AppWeigh sensor is road-ready for even the most severe trucking environments. Developed by industry experts, the AppWeigh sensor is designed for easy DIY installation, and long-lasting reliability. Please note - this listing is one sensor (two sensors are required for both a truck AND trailer). 

• Provides truck and/or trailer gross weight, plus axle group and estimated cargo weight to your smartphone or tablet.
• Works on air suspension equipped trucks and trailers.
• Easy do-it-yourself installation.
• One sensor is required per height control valve on each axle group (typically one sensor on for the truck and one for the trailer). For best signal range, secure sensor where visible (by adding airline between tee fitting and sensor).
• Accurate to within 300 lbs or better when properly calibrated.
• Requires an initial two-point calibration for accuracy, with the user entering empty axle group weights and also loaded weights as obtained from a certified in-ground scale.  
• The technology we invented and understand. Don't be fooled by the imitations -- trust the original!