TK102
Product parameter
Network: GSM/GPRS
Band ：900/1800/1900Mhz
CPU:  STC 
GPS chip:  New Star NS-1315 GPS chip
GSM/GPRS module: SIM 300s
GPS sensitivity:  -159dBm
GPS accuracy:  5m
Time To First Fix:  Cold status 45s  Hot status 1s
Wall charger 110－220V input     5V output
Battery: 3.7V 850mAh Li-ion battery
Standby:  48hours
Storage Temp:  -40°C to +85°C
Operation Temp:  -20°C to +55°C
Humidity:  5%--95% non-condensing

Description
Size: 64 x 46 x 17mm  Package size: 212 x 129 x 59mm
Net weight: 50g Gross weight: 550g

Features:
1. Real time tracking：real time tracking on platform the shortest interval time can be 30s，
2. Tracking on mobile phone：when call Tracker，will got reply with location information, click Google map link user will see the location information of google map in mobile screen .
3. voice monitor：can monitor the voice around tracker by cell phone .
4. SOS： press SOS button, it will send help information to authorization number and platform .
5. Movement alarm ： Tracker as the center, arbitrary set radius。When Tracker move out  this range,will send alarm to authorization number and platform

6. Over speed alarm ：Setting speed value, when tracker over speed it will send alarm to authorization number and platform .
7. Geo- fence ：setting Geo-fence by SMS or platform ，when tracker move out this Geo-fence ，it will alarm to authorization number and platform .

My command :

This product have been success developed in 2006, is a MCU_STC signal chips, GSM Modes SIMCOM SIM300 GPS Mode SIRF 3. When this model launch to market is always hot sale and steady ,  get location quickly is its biggest advantage . Because of the massive produce the price relate to be very low , and for Performance price ratio , customers still like this model very much .
disadvantage：
1， Verbose command operation.
2， When GPRS working not support SMS to get location.
3， Because of limited resources for single chip, this model can’t support customized software.
4， No AGPS
5， No Mileage calculation
6， No support SD card ，no GSM blind area breakpoint continuingly.
7， Couldn’t support update software over the air.
8， No sleeping function ，The power consumption is high so stand by time short.
9， The above disadvantage have been totally improved in model 102-2\TK106