GL520MG specifications LTE Cat M1/NB2 waterproof GNSS trackers with up to 7 years standby time EGPRS Specifications Operating Band Data Transmission eMTC (DL) 588 Kbps eMTC (UL) 1119 Kbps NB2 (DL) 127 Kbps NB2 (UL) 158.5 Kbps NB1 (DL) 32 Kbps NB1 (UL) 70 Kbps EGPRS Specifications Frequency Data Transmission General Specifications GNSS Specifications GNSS Type u-blox All-in-One GNSS receiver Autonomous: -147 dBm Hot Start: -156 dBm Reacquisition: -160 dBm Tracking: -162 dBm Cold start: 27s average TTFF (Open Sky) Warm start: 27s average Hot start: 1s average Interfaces Power Button Used for power on/off and working status checking Internal only GNSS Antenna Internal only GNSS, Status Air Interface Protocol Command Set @Track protocol command 87 × 51 × 30mm 3.43’’(L) × 2.01’’(W) × 1.18’’(H) 87 × 51 × 33.5mm 3.43’’(L) × 2.01’’(W) × 1.32’’(H) (magnetic case mounting version) 140g (4.94oz) 160g (5.64oz) (magnetic case mounting version) Backup Battery Low Power Alarm Alarm when internal battery is low Standby current: < 8 µA 1 report per day (GNSS on): 5 years 1 report per day (Cell ID only): 7 years Wakeup Report Report when the device wakes up Standby Time Motion Detection Motion detection based on internal 3-axis accelerometer Operating Temperature Reporting Frequency Adjustment Intelligent adjustment of reporting frequency Internal Temperature Sensor For temperature monitoring Accuracy: ±1℃ Internal Light Sensor Internal Motor For vibration feedback after successful operation of function button Magnetic Mounting Case (Optional) For easy installation on metal surface Buffer Messages Transmit Protocol TCP, UDP, SMS Working Modes Power saving mode for long standby time Continuous mode for emergency tracking Scheduled Timing Report position and status at preset time Report intervals Geo-fences Support up to 20 internal geo-fence regions