Gps tracker data logger for fleet management vehicle protection gsm quad-band connectivity gps tracker data logger for fleet management vehicle protection gsm quad-band connectivity, at glance.complete system integration to your vehicle, quad-band gsm frequency extensive functions through sms, gprs and internet applicationsspecificationsgeneral network: gsm gprs, 2g: 85090018001900, gsmgprs module: simcom sim340os compatibility: windows7 and windows vistaworking temperature: -20 to 55 degrees celsiushumidity: 5 to 95 percent non-condensingpower source: car battery or built-in backup batterybattery size: 1000mah, battery standby: 80 hoursgps: receiver module: sirf iii chipgps sensitivity: -159 dbm, gps accuracy: 5 metersaltitude limit: 18, 000 meters (60, 000 feet) maxvelocity limit: 515 meterssecond (1000 knots) maxacceleration limit: less than 4gcold status: 45s, warm status: 35s, hot status: 1smemory: micro sd card supports up to 4gbalarms, alerts, security functions, real-time trackingequipment self-check, remote power off, portsmonitor connection portsim card slot - 1x gsmmicro sd card slotmini-usb port.