Specification: Size: 40*58*14.5mm Working voltage: 6 to 30V DC Input fuse: 2A Working temperature: -20 to 85°C Humidity: 10% to 90% RH CPU: MT6261 (260MHz) GSM module: Band: 850/900/1,800/1,900MHz Tally with: GSM phase 2/2+ Class 4 (2W, 850/900MHz) Class 1 (1W, 1,800/1,900MHz) GPRS multi-slot class 12 GPRS mobile station class B Max RF output: 33.0, ±2dBm Dynamic input range: -15 to -102dBm Receiving delicacy: Class RBER â?¤2% (-105dBm) Frequency stability: >2.5ppm Maximum frequency deviation: ±0.1ppm RMS deviation: â?¤5 degrees GPS module: GPS chip set: U-BLOX 8 Frequency: L1, 1575.42 MHz, GPS L1 C/A. Number of Channel: 56, SBAS L1C/A, QZSSL1C/A. GPS sensitivity:-164dBm Positioning accuracy: 5m Reacquisition: 0.1 sec, average Hot boot: 2 sec., average Warm boot: 38 sec., average Cold boot: 44 sec., average Altitude limit: 18000 m Velocity limit: 515 m/s I/O port: 4 I/O cables Positive 6V to 30V, red wire Negative, black wire Remote cut off engine power, yellow wire ACC, engine start detecting, green wire Current: Power-saving mode: 4mA working current: 60 to 150mA Charging current: