Color: Black - Iron housing material - Model: TK-103-2(SD) - Network: GSM / GPRS - GSM module: SIMCOM SIM900 - Frequency band: 850 / 900 / 1800 / 1900 Mhz - Communication protocol: TCP - CPU: ARM7 - GPS module: SIRF3 - GPS sensitivity: -159dBm - Positioning accuracy: 5M - Time to first fix: cold status / 45 sec; hot status / 1 sec - Built-in 1 x 1100mAh battery - Supports 2 GB TF card - Used for data storage in blind area - Dual SIM card auto switch - In DC: 12~24V - Out DC: 5V / 1A - Function: GPS stations double localization RTLS Track sensor Monitor One-key for help Mileage calculation Geofence Movement alert Overspeed alert Sensor alarm Check Google map by mobile phone Driving work mode - Accessories: - 1 x Card holder - 1 x Electric relay - 1 x Relay connecting cable - 1 x GPS antenna (280cm) - 1 x GSM antenna (220cm) - 1 x Power control cable - 1 x Chinese / English manual - 1 x Software CD