  
Siemens Tri-band MC55/56 GSM + GPRS
SiRF III chipset for active GPS tracking
Compact form factor in all aluminum housing
Support 16 GPS channels "all in view" tracking
Full management of passwords
Change settings on demand using SMS messaging
Operates in adverse or urban canyon conditions
Firmware includes built-in TCP/IP protocol and SMS
GPRS LCP, PAP, ICPC, TCP IP and UDP protocols
4 digital inputs: 2 fixed 2 open
Available with Aluminum or PVC Housing
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