1.频率：GSM900/1800Mhz或GSM900/1800/1900Mhz2.GPS芯片组：最新的GPS三星III芯片组3.GPS敏感性：-158Db4.GPS频率：L1，1575.42MHz6.速度准确性：0.1m/s7.时间准确性：同步对GPS时间8.发送开始：1秒。，平均9.反馈时间：38秒。，平均10.机身尺寸77mm*45mm*25mm装箱：175mm*120mm*50mm箱子重量：175g数量48台1.GSMmodule:GSM900/1800MhzorGSM900/1800/1900Mhz2.GPSchipset:LatestGPSSiRF-StarIIIchipset3.GPSsensitivity:-158Db4.GPSfrequency:L1,1575.42MHz5.Channels:20channelall-in-viewtracking6.PositionAccuracy:Outdoors:5m-25m;Indoors:100m-500m7.VelocityAccuracy:0.1m/s8.TimeAccuracy:SynchronizedtoGPStime9.Defaultdatum:WGS-8410.Hotstart:1sec.,average11.Warmstart:38sec.,average12.AltitudeLimit:18,000meters(60,000feet)max.13.VelocityLimit:515meters/second(1000knots)max.14.AccelerationLimit:Lessthan4g15.Dimension:77mm*45mm*25mm16.GiftBoxDIM:175mm*120mm*50mm