Parameters: Power supply：DC10V~30V; Operating temperature：－40°C~＋80°C; Pitch angle：－40°~＋40°; Roll angle：－40°~+40°; Voltage measurement range: DC10V~30V; Voltage measurement accuracy: 0.5V; Speed accuracy：＜0.36Km/h; GPS data refresh rate：1s; GPS hot start：1s（AVG）； Wireless transmission frequency：2.4GHz; GPS cold start：32s（AVG）； Weight：230g; Product Size：127*25*60MM Packing list: 1pc* Automotive Smart Slope Meter main unit 1pc* Cigarette lighter power cable 1pc*...