Table 2.

Detection gateway parameters.

Microcontroller	Nordic nRF52840 64 MHz Cortex-M4 with FPU 1 MB Flash, 256 KB RAM 2.4 GHz transceiver
Tracker communication Communication protocol Receive sensitivity Signal zone	Laird BL654-PA extended with LNA Proprietary 2.4 GHz −98.5 to −107 dBm Ideal: 1.6 km (outside)/Real: 50 m (inside)
LTE Data transmission Data rates	Quectel EG912Y LTE, GSM/GPRS/EDGE 10/5 Mbps (downlink/uplink @ LTE FDD)
Wi-Fi Wi-Fi protocol CPU	Espressif ESP32 WROOM 802.11 b/g/n (802.11n up to 150 Mbps), 2.4 GHz ESP32-D0WD-V3 Dual Core 240 MHz
Antenna Number × connector Peak gain	Laird 2.4 GHz Dipole RF 2 × SMA +2 dBi
Internal memory Format Size Clock	Macronix MX25R6435FZNIL0 Flash 64 Mb 80 MHz
Dimensions (without antenna)	105 × 105 × 27 mm
Weight (without antenna)	100 g
Power supply	5 V/4 A via power jack