
Critical Asset Monitoring & Telematics
Lantronix FOX Series Vehicle Telematics Gateways
FOX is a compact cellular telematics gateway for fleets and mobile equipment. FOX3 and FOX4 models combine 4G LTE, GNSS positioning, CAN and serial interfaces and onboard scripting in one 105 x 83 x 28 mm unit.
From $144.62
Overview
About the Lantronix FOX Series
The FOX Series (FOX3 and FOX4, also written FOX 3 and FOX 4) is an all-in-one vehicle telematics gateway that reads data from the vehicle, processes it locally and sends only what matters over cellular. It connects directly to ECUs and sensors over CAN, RS-232, RS-485 and 1-Wire, tracks position with multi-channel GNSS (GPS, Galileo, GLONASS) and logs history to 8 MB of onboard flash, so fleet operators get location, engine and driver data without bolting together separate trackers and modems.
Every model runs 4G LTE: LTE-M/NB-IoT on most SKUs and LTE Cat-1 on F44 models, with 2G fallback on many regional variants. Interfaces include three user-configurable digital/analog I/Os, a dedicated ignition input, two RS-232 ports or one RS-232 plus one RS-485, I2C, 1-Wire with 5 V phantom power and USB 2.0. Power input is 10.8 to 60 VDC, with 50 mA typical draw at 12 VDC and under 1 mA in sleep. The unit operates from -40°C to +85°C.
FOX4 adds Bluetooth 5.2, 2.4 GHz Wi-Fi, secure boot and an ATEC608 secure element, and the F43R20FS adds GNSS dead reckoning for tunnels and dense urban areas. Logic runs at the edge in PFAL or LUA scripts, data goes to the cloud over MQTT with SSL/TLS 1.3, and fleets are provisioned and monitored through Lantronix Percepxion or configured locally with Lantronix Workbench.
Key capabilities
- Direct vehicle bus access
- CAN, RS-232, RS-485 and 1-Wire inputs read ECU, tachograph (FMS), RPM, temperature and fuel-level data without an external protocol converter.
- Dead reckoning option
- The F43R20FS pairs GNSS with dead reckoning to keep position accuracy in tunnels and urban canyons where satellite signals drop out.
- Edge scripting cuts data cost
- PFAL or LUA scripts filter and normalize telemetry on the device, so only the data you need crosses the cellular link.
- 10.8 to 60 VDC input
- Accepts 10.8 to 60 VDC straight from the vehicle supply, drawing about 50 mA at 12 VDC in normal operation and under 1 mA in sleep mode.
- FOX4 security hardware
- FOX4 models add secure boot and an ATEC608 secure element alongside AES and SSL/TLS 1.3 encryption of transmitted data.
- BLE sensors and Wi-Fi
- FOX4 includes Bluetooth 5.2 and Wi-Fi 4 for wireless sensors that report ID, movement, magnetic detection and temperature; selected FOX3 models offer BLE 4.1.
How to choose the right FOX Series part number
F33 part numbers are FOX3 (LTE-M/NB1, no Wi-Fi); F43 are FOX4 LTE-M/NB2 and F44 are FOX4 LTE Cat-1 for Europe. A 5 in the fifth character (F33H502S, F43H502S) means one RS-232 plus one RS-485 instead of two RS-232. On FOX3, B01 suffixes add the backup battery (F33H002B01 vs F33H002S) and GZ models add BLE 4.1. Region codes: F33H007S, F43H207S and F43H507S are Japan builds; F43H20FS and F43H50FS are worldwide. F43R20FS adds dead reckoning. Numbers 1000000 to 1000104 are software premium features; 600xx are cables and extension boxes.
Configure & order
Find your FOX Series part number
Every orderable FOX Series configuration, filtered by the specs that actually differ between them. Pick what you need on the left and the matching part numbers appear here.

F33H002S
$147.42
Ships on backorder

F33H002B01
$151.67
Ships on backorder

F33H502S
$171.04
Ships on backorder

F33HGZ2S
$273.06
Ships on backorder

F33HGZ2B01
$162.90
Ships on backorder

F33H007S
$144.62
Ships on backorder

F43H102S
$185.68
Ships on backorder

F43H502S
$190.28
Ships on backorder

F44H102S
$183.28
Ships on backorder

F44H502S
$187.88
Ships on backorder

F43H207S
$170.33
Ships on backorder

F43H507S
$176.74
Ships on backorder

F43H20FS
$183.86
Ships on backorder

F43R20FS
$206.68
Ships on backorder

F43H50FS
$188.47
Ships on backorder
Complete the deployment
Accessories, renewals & add-ons
Everything sold for the FOX Series, organized by what it does — cables & adapters, software, licenses & renewals, evaluation & development kits— each with why you'd add it.
Cables & adapters
9 items
Installation Cable with 6-pin and 4-pin Connectors
60048
FOX3 accessory port installation cable with a 6pin (2x3) connector, 4pin (2x2) UCOM connector, and 6 x open end wires. It is used for connecting and powering an RFID/NFC reader.
$10.30
Ships on backorder

8-pin Installation Cable
60036
1.5 m 8-pin installation cable for the FOX3 and BOLERO40 main port. It includes an 8pin (2×4) connector and 8 x open ends wires.
$13.46
Ships on backorder

Extended installation Cable
60353
Extended installation cable for the FOX3 main port. It includes an 8pin (2x4) connector, a 4pin (2x2) UCOM connector, a 2A-blade-fuse and 6 x open end wires.
$16.25
Ships on backorder

Power and OBDII Connection Cable
60286
FOX3 and BOLERO40 power and OBDII connection cable with an 8pin (2×4) connector, OBDII connector and separate ignition (IGN) wire.
$16.70
Ships on backorder

8-pin Installation Cable with Fuse
60338
FOX3 main port extended installation cable with an 8pin (2x4) connector, 2A-blade-fuse, and open end wires. The cable is 1.5 m long.
$17.25
Ships on backorder

IOBOX Installation Cable
60347
IOBOX-MINI/CAN/WLAN automotive connection cable with a 16pin (2x8) connector. It is 1.5 m long with open end wires.
$19.04
Ships on backorder
Input/Output extension box
60100
Input/Output extension box accessory for the FOX3 series. It adds a mini-USB port, a 16pin MOLEX connector and 13 additional IOs, and requires cable CA38 to interface with vehicle…
$34.75
Ships on backorder

Service and Power Cable
60044
Service and power cable for FOX3 and BOLERO40 with an 8pin (2x4) Molex connector, car charger, RS-232 female connector, 1.5 m length, and 2A-fuse.
$51.89
Ships on backorder
CAN and IO extension box
60149
CAN and IO extension box for the FOX3 series. It adds CAN-Bus support, D8 digital tachograph support and 8 x IOs, and requires cable CA38 for vehicle signal or external system…
$62.79
Ships on backorder
Software, licenses & renewals
7 itemsEco Drive
1000000
1000000 ECO DRIVE is a software activated premium feature described as ECO DRIVE GPS for the FOX Series for Vehicle Telematics.
LUA
1000104
LUA software activated premium feature for the FOX Series. Lantronix lists LUA as an onboard scripting option for FOX real-time event response.
AES 128
1000002
Software activated premium feature for the FOX Series. It provides Premium Feature 2: AES 128.
Indexed History
1000003
Software-activated premium feature for the FOX Series: Indexed History.
Can Bus
1000005
Software activated premium feature for the FOX Series for Vehicle Telematics. It is listed as CAN BUS, Premium Feature 5: CH/FMS/OBDII.
Evaluation & development kits
1 itemFOX Evaluation Kit
FOX4-PROMO
FOX Evaluation Kit for FOX Series for Vehicle Telematics projects.
$909.33
Ships on backorder
Compatibility taken from the Lantronix part-number tables for the FOX Series. Don't see what you need? Request a quote — we can source the full Lantronix catalog.
Where the FOX Series is used
- Fleet tracking with GNSS and dead reckoning through tunnels
- Refrigerated cargo temperature monitoring with threshold alerts
- Driver behavior scoring for braking, cornering and idle time
- RFID driver identification and automated driver-hours logging
- Farm and airport ground equipment telemetry over CAN and OBDII
FOX Series datasheets & documentation
- Product BriefPDF
- AVL Firmware & Hardware PREMIUM-FEATURES Product BriefPDF
- AVL Firmware & Hardware PREMIUM-FEATURES Product Brief (A4)PDF
- FOX5 Vehicle Telematics Product Brief (A4)PDF
- FOX3 Series Quick Start Guide Rev APDF
- FOX3 Series Promo Kit Quick Start Guide Rev BPDF
- FOX3 Series Promotion Kit – User GuidePDF
- FOX4 Promotion Kit User Guide Rev APDF
FOX Series FAQ
What is the difference between FOX3 and FOX4?
Both share the same interfaces, 10.8 to 60 VDC input and -40°C to +85°C rating. FOX4 adds Bluetooth 5.2, 2.4 GHz Wi-Fi 4, secure boot and an ATEC608 secure element, plus wider LTE band support. FOX3 models are LTE-M/NB1, with BLE 4.1 only on the GZ variants.
Which FOX model supports dead reckoning?
F43R20FS is the dead reckoning variant. It is a FOX4 LTE-M/NB2 unit with two RS-232 ports, BLE 5.2, Wi-Fi 4 and a backup battery, and it keeps estimating position when GNSS signals are lost in tunnels or dense urban areas.
Can the FOX gateway read CAN bus and OBDII data?
Yes. FOX has a CAN-Bus interface that uses two of its three I/Os, and the CAN BUS premium feature (1000005) covers CH/FMS/OBDII. The 60286 cable connects to OBDII-compliant vehicles with a separate ignition wire.
What power input does the FOX telematics gateway need?
FOX accepts 10.8 to 60 VDC. Average draw is 50 mA at 12 VDC in normal operation and under 1 mA in sleep mode. An internal 1000 mAh rechargeable backup battery is fitted on battery-equipped part numbers.
What does the FOX4-PROMO evaluation kit include?
The FOX4-PROMO kit includes installation cables 60048, 60353, 60044 and 60286, external cellular and GNSS antennas, an evaluation box, a power supply, a USB-to-serial converter and all premium features. The FOX gateway itself is sold separately.

