Features :

• Can be used with Battery System of 6V, 12V, 24V. Always know your battery level by using your smart phone. monitor up to FIVE batteries with one APP (car, truck, Motorcycle, RV, scooter, Lawn Mower, Boat, Jetski, Etc.) 
• Shows the user Battery Capacity in real time.
• Check the functioning of the alternator, belts, connections, wiring and the controls.
• Can set early warning mode vibration or ring on a smart phone when voltage is low, or alternator not working Includes 3m tape to mount to battery

This is the smallest Bluetooth 4.0 battery monitoring device. Measures only 1" x 1.5" Now you can monitor the battery level of up to 5 different vehicles using our Free app. Simple to install, easy to use. Attach the leads to positive and negative terminals on your 6,12 or 24 volt battery, donwload the free app and link up to 5 batteries. If you have several vehicles such as cars, trucks, motorcyles, scooter, RV, Lawn mower, jet ski, boat, and more this devise will save you time and energy to check 5 batteries in seconds. Easy to transfer to another battery SPEC INFORMATION : Product Size : 38.1 mm L x 25mm W x 18.2 mm H Weight : 22.2 g. Material : PC+ GF Waterproof : IP66 Operation Voltage : DC 4~32V Operation Temperature : -40℃ ~ +85℃ Transmission : Bluetooth Version 4.0 Frequency : 2.4GHz Power Consumption : <2mA Certification :