Automatic Vehicle Tracking System For Fleet Management,GPS Tracking System manufacturer Specifications: GPS specifications (SiRF star III GPS module) GPS receiver: L1, C / A code, 20 channels. Tracking sensitivity: -159dBm (average) or better. TTFF (time to first fix): Cold start: 42s (average). Hot start: 1s (minimum). Positioning accuracy: 2DRMS: approx. 10m. 2DRMS: approx. 5m (WASS enable). Time accuracy: 1μs. Measurement data output: Update time: 1 second. NMEA output protocol: V.3.0. Baud rate: 4800, 9600, 38400, 57600 bps (8-N-1). Datum: WGS-84. Type: GGA, GSA, GSV, RMC (default), VTG, ZDA, GLL, SiRF binary. Power consumption: 60mA, continue mode: 35mA. Power supply: 3.3V. Operating temperature: -40°C ~ +85°C. Storage temperature: -55°C ~ +100°C. GPS specifications (Sony GPS module) GPS receiver: L1, C/A code, 12 channels. Tracking sensitivity: -152dBm (average) or better. Acquisition sensitivity: -139dBm (average) or better. TTFF (time to first fix): Cold start: 50s (average) / 60s (95% possibility). Warm start: 35s (average) / 40s (95% possibility). Hot start: 2s (minimum) / 6s (95% possibility). Positioning accuracy: Standard positioning service (SPS), WAAS (optional). 2DRMS: Approx. 5m. Time accuracy: 1μs or less precision. Measurement data output: Update time: 1 second. NMEA output protocol: V.3.01. Baud rate: 4800, 9600, 19200, 38400 bps (8-N-1). Datum: WGS-84. Type: GGA, GSA, GSV, RMC, VTG, ZDA, GLL, SONY binary. Power consumption: 39mA (average). Power supply: 3.3V. NMEA output protocol: V.3.01. Operating temperature: -40°C ~ +85°C. Storage temperature: -55°C ~ +100°C. GSM / GPRS specifications (Siemens MC-55 / 56 GSM & GPRS module) Frequency bands: MC55 tri-band: EGSM 900, GSM 1800, and GSM 1900. MC56 tri-band: GSM 850, GSM 1800, and GSM 1900. GPRS connectivity: GPRS multi-slot class 10. GPRS mobile station class B. Temperature range: Normal operation: -20°C to +55°C. Restricted operation: -25°C to -20°C and +55°C to +70°C. AVTS-1500 Dimension: L: 107.4mm, W: 65.4mm, H: 35.6mm (include holder kit). L: 105mm, W: 65.4mm, H: 30mm (exclude holder kit). Weight: 400g. Certificate: CE / FCC / ROHS. Features: LED Indications GPS coverage: Sony GPS module: LED flashes when GPS signal is not fixed. The flashing frequency increases as the signal approaches 'fix' status. It is always on when GPS signal is fixed. SiRF star III GPS module: LED flashes when GPS signal is fixed. GSM / GPRS coverage: Permanently off during GSM power down mode, alarm mode, charge-only mode, sleep mode with no wake-up event in progress. Fast flashing during limited network service: No SIM card inserted or no PIN entered, or network search in progress, or ongoing user authentication, or network login in progress. Slow flashing during IDLE mode: The mobile is logged to the network (monitoring control channels and user interactions). No call in progress. Voice: ON during voice communication. ON for a few seconds when receiving / sending SMS or GPRS from / to call center. SOS: ON for a few seconds when SOS button is pressed. Connectors External power: Connects to vehicle permanent power wires. Data in / out: The unit is equipped with standard barcode, RFID, keypad, PDA or PC interface (PS2 or RS232 interface). For example, when barcode scanning is performed, several barcode readings, which fit into one GPRS pack or one SMS limit, are grouped and sent to call center. Car navigation: Connects to PDA, laptop PC or notebook PC to perform car navigation. GPS antenna: GPS antenna has to be in a face-on-sky position to enhance satellite signals reception. GSM / GPRS antenna: Receives GSM / GPRS network signals. Function buttons Power on / off: Turn on / off unit and pick up incoming calls. SOS: Drivers can press the SOS button in emergency circumstances. SOS messages are sent to call center and defined cell phone numbers.