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Specification:
GT-02 for Simcom 900 module 850/900/1800/1900Mhz 
GPRS: TCP/IP build in GSM Module
GPS : SiRF GSC3 f/LPx
Channels:20 channels
Sensitivity:Tracking -159dBm
GPS Posttioning time: Cold start < 38sec (Open Sky)

Warm start < 15sec

Hot start < 2~3 sec (Open Sky) GPS postioning precision:10m (2D RM)

Voltage : 9v~ 43vDC (Impact resistance voltage <100v) Operating currnt : 60mA (12vDC) ,48mA (24vDC) Standby current : 23mA (12vDC) ,20mA(24vDC)
LED : GPS (Blue) GSM(Green) Charging(Red) Built in 3 Axis: G-Sensor

Built in Drift suppression circuit

Built-in GSM antenna,& high gain GPS antenna
Built-in dynamic / static recognition feature
Command settings: support SMS Settings / platform settings Temperature: -30° C ~ +70° C
Storage Temperature: -40° C~ +80° C
Humidity: 20% ~ 80% RH
Dimension:95(L) x 45(W) x16(H)mm
Weight:100g