Features: Receives notifications of battery conditions in Wireless.Checks vehicle cranking system automatically while engine is starting. Checks charging system (alternator),Lists time of each driving. Alerts mobile phone if detects abnormal data.Shortcircuit and reverse connection protections. Data store in battery monitor up to 35days if outs ofsync.Automatic synchronization when in Wireless. Fit for all 12V vehicle batteries.Shows historical data graphically.Engine starting detection automatically.Support multibattery management,Exclusive private account, data will not lose ,Car location seekings function via map.Trip record with map androutes.Works with smartphones with Wireless 4.0 Specifications: Material:ABS Input Voltage: DC6V ~ 20V Average Working Current: 1.5mA Working Temperature: -40C~90C (-40F~194F) Reverse Connection Protections: Builtin Shortcircuit Protections: Builtin Waterproof: IP67 Note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color. Package includes: 1x Battery Monitor