FMB120 GNSS/GSM/Bluetooth tracker with internal GNSS/GSM antennas and internal battery
Quick Start Guide
How to insert micro SIM card into FMB120
1. Remove FMB120 cover.
2. Insert SIM card as shown. SIM slot 1 is closer to PCB, SIM slot 2 is the upper one.
3. Attach cover.
4. Device is ready.
https://teltonika.lt/product/fmb120-internal-gnss-antenna-battery/