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FOX4

FOX3-4G Evolution Award

FOX Series for Critical Asset Monitoring
Focus

Secure. Scalable. Built for Industrial Reliability.

Lantronix FOX gateways enable real-time monitoring and control of critical infrastructure—from generators and HVAC systems to fuel tanks and compressors—delivering actionable insights and reducing operational costs.

Product Brief Learn More about Percepxion!

Key Features

Native support for machine protocols like Modbus, BACnet, RS-232/485 for seamless equipment integration
Cellular and BLE connectivity for flexible deployment and wireless sensor access
Edge intelligence with PFAL and LUA scripting for local automation and reduced cloud dependency
Cloud-ready with secure MQTTS, TLS 1.3, and integration with Percepxion™ for centralized device management

FOX Series for Critical Asset Monitoring Overview

Why Customers Choose Lantronix FOX

Built for Industrial Reliability and Engineering Efficiency

Protocol flexibility: Native support for Modbus, BACnet, RS-232/485, CAN, and analog/digital I/O means faster integration with legacy and modern equipment
Edge intelligence: LUA and PFAL scripting allow engineers to automate logic locally, reducing cloud dependency and cellular costs
Scalable device management: Percepxion™ enables centralized provisioning, monitoring, and troubleshooting—ideal for large deployments
No vendor lock-in: Open standards and cloud-agnostic architecture ensure long-term flexibility and interoperability

Critical Asset Monitoring Applications

Transform How You Monitor and Manage Industrial Assets

Generator & Power Systems

Minimize downtime with real-time alerts and remote troubleshooting
Automate compliance reporting and reduce manual site visits
Optimize maintenance cycles using data-driven insights
Lower total cost of ownership with edge processing and cellular optimization

HVAC & Boilers

Ensure safe operating conditions by monitoring temperature and water ranges
Detect failures early with real-time alarms and predictive analytics
Reduce energy consumption through optimized operating patterns
Simplify integration with BACnet and Modbus support

Fuel & Tank Level Monitoring

Prevent outages by ensuring fuel continuity for backup systems
Optimize refill logistics with accurate level tracking and route planning
Detect tampering or theft with real-time alerts and historical data
Enable remote visibility for distributed assets in hard-to-reach locations

Refrigerated air dryer Ultrafilter for compressor air

Air Compressor Monitoring

Cut energy costs—up to 30% savings through smart sequencing and usage tracking
Avoid unplanned downtime with early fault detection and alarm triggers
Digitize compliance for easier reporting and audit readiness
Streamline operations with centralized monitoring and edge automation

Explore turn-key solution Kompress.ai by Lantronix: Manage Compressors Anywhere

How to Get Started

Evaluate FOX for Your Critical Asset Monitoring Project

Order a FOX gateway and a promo kit with essential cables and accessories from Lantronix value-added resellers
Need help locating a reseller? Contact Lantronix to find the nearest authorized partner
Try Percepxion™ free for 60 days—create an account at percepxion.ai to start managing and monitoring your devices remotely
Download Lantronix Workbench to program and configure FOX devices locally—ideal for lab testing and custom scripting

Case Studies

Smart Cities

Nationwide Monitoring of Critical Infrastructure at Cellular Sites

Lantronix IoT Solutions Deliver Actionable Insights and Operational Efficiency for a Leading Mobile Network Operator

FOX Series for Critical Asset Monitoring Tech Specs

Cellular/GNSS
- 4G LTE, with 2G fallback (refer to the table below)
- Internet (TCP/UDP/HTTP/SMTP)
- Multi channel GNSS (GPS/Galileo/GLONASS)
- Dead Reckoning variants
- A-GPS (online / offline /autonomous)
- Protocols: NMEA; PFAL (binary)
- Position Accuracy
  - GPS: 2.5m
  - GLONASS: 4.0m
- Acquisition / Sensitivity
  - Cold Start: GPS 29 s; GLONASS 30 s
  - Tracking: GPS -161 dBm; GLONASS -158 dBm
  - Sensitivity: GPS -148 dBm; GLONASS -145 dBm
- GPS Operational limits
  - Velocity: 500 m/s (972 knots)
  - Altitude: 50.000 m
  - Update rate: 1 Hz
GSM / GNSS Antenna
- Internal and external with automatic/manual
  - Activation with PFAL-Command
- Wi-Fi 2.4, BLE 5.2
  - FOX4 Only
Power
- Power supply: +10.8 V~ 60 V DC
- Internal 1000 mAh rechargeable battery
  - Optional / Accessory
- Average Power Consumption
  - Normal operation: 50mA @ 12 VDC
  - Sleep mode: < 1mA @ 12 VDC
Environmental Data
- Operating temp.: -40°C to +85°C
- Storage temp.: -40°C to +85°C
- GSM: -40°C to +85°C
  - The GSM/GPRS module is fully functional (-20°C to + 55°C meets the 3GPP specifications)
- Battery Discharging temp.: -20°C to +60°C
  - Applicable with backup battery. Storage and using conditions of the device with battery option are limited to the battery temperature range.
- Charging temp.: 0°C to +45°C
Physical Specifications
- Dimensions (LxWxH): 105 mm x 83 mm x 28 mm
Security Features
- Secure Boot
- ATEC608 secure element
  - FOX4 only
Interfaces
- 3 x Digital/analog IO ports (user-configurable)
- 1 x Predefined digital input (Ignition)
- 3 x LED indicators (user-configurable)
- 2 x RS-232 Ports or 1x RS-232 1x RS-485 variants
- 1 x 10pin Mini-USB connector for IOBOX-MINI and IOBOX-CAN
  - Optional / Accessory
- 1 x 1-Wire interface (incl. 5V Phantom Power)
- 1 x I²C interface
- 1 x CAN-Bus Interface (uses 2 of 3 I/Os)
  - Optional / Accessory
  - Hardware Premium Features: CAN-interface.
- 1 x 2FF SIM Card Holder
- 1 x USB 2.0 interface
Sensors
- 3-axis Acceleration/Temperature
- - 3DG: ± 8g (programmable)
- - Temperature: - 50 to + 120°C (programmable)
Processor Core
- RTC
- 8 MB Flash (History / Firmware / Configuration)

Warranty

2 Years

Product Selection Guide

SKU	REGION	BATTERY	RS-485	BLE	Wi-Fi	4G LTE	3G/2G FB
F33H502S	WORLDWIDE	x	x			M, NB1	x
F43H502S	EMEA	x	x	5.2	802.11n	M, NB2	x
F43H507S	JAPAN	x	x	5.2	802.11n	M, NB2
F43H50FS	WORLDWIDE	x	x	5.2	802.11n	M, NB2
F44H502S	EMEA	x	x	5.2	802.11n	Cat-1	x

FOX Series for Critical Asset Monitoring Downloads

Product Brief

FOX Series Product Brief (A4)

FOX Series Product Brief

FOX3 Series Product Brief

FOX4 Series Product Brief

FOX4 Series Product Brief (A4)

FOX3 Series Product Brief (A4)

Certificates

Don’t see the certificate you need? Contact us to explore options and timelines for new certificates.

CERT, SINGAPORE IMDA, FOX4-4G-M1-BLE

CERT, CE DOC, FOX3-4G-M1-RS485

CERT, CE DOC, FOX3-4G-M1

CERT, CE DOC, FOX4-4G-C1-BLE

CERT, UKCA DOC, FOX3-4G-M1-RS485

CERT, UKCA DOC, FOX3-4G-M1

CERT, PTCRB, FOX4-4G-C1-BLE

CERT, UR, FOX3 SERIES

CERT, CB, FOX3 SERIES

CERT, PTCRB, FOX3-4G-M1-RS485

CERT, RCM, FOX3-4G-M1

CERT, UL, FOX4-4G-C1-BLE

CERT, CB, FOX4-4G-C1-BLE

CERT JP WIFI FOX4-4G-M1-BLE

CERT JP LTE FOX4-4G-M1-BLE

ENV-00344 Environmental Certs RoHS and REACH_FOX4

CERT , PTCRB, FOX4-4G-M1-BLE

Cert, Declaration of Conformity, FOX3 4G BLE

Cert, EU Declaration of Conformity, FOX3 BLE

Cert, ISED, FOX3-4G-NA (Cert-00198)

Industry Canada

Cert, RoHS and REACH FM-418 A, Lantronix Mobility Solutions – FOX3

CERT, E-MARK, FOX3-4G-M1

CERT, PTCRB, FOX3-4G-M1

CERT, UKCA DOC, FOX4-4G-C1-BLE

Cert, Declaration of Identical to Type, FOX3

Cert, UK Declaration of Conformity, FOX3

Cert, FCC Grant, FOX3-4G-NA

Cert, EXPERTISE, FOX3-4G-NA

CERT, UL/CB, FOX4-4G-M1-BLE

CERT, CE/UK DOC, FOX4-4G-M1-BLE

CERT, PTCRB AT&T, FOX4-4G-M1-BLE

Firmware

Keep your products up to date by downloading the latest firmware. You must log in or create a MyLantronix account to download firmware.

User Guides

FOX3 Series Promo Kit Quick Start Guide Rev B

FOX3 Series Quick Start Guide Rev A

FOX4 Promotion Kit User Guide Rev A

FOX4 Hardware Manual Rev E

FOX3 Series Promotion Kit – User Guide

FOX3 Series – Hardware Manual Guide

FOX3 Series Promotion Kit User Guide

FOX Series for Critical Asset Monitoring Awards & Partners

Lantronix Wins IoT Evolution World 2025 Asset Tracking Award

Lantronix Selected by Tier-1 U.S. Wireless Operator to Digitally Monitor 50,000+ Cell Site Generators Using FOX Series Telematic Edge Gateways

Lantronix Wins 2024 IoT Evolution Asset Tracking Award

Based on Quantum Aviation case study, FOX3 Telematic Gateways honored for excellent innovation in growing IoT market segment

Lantronix Wins IoT Evolution Product of the Year Award

Lantronix FOX3 Series Telematic Gateway delivers world-class connectivity for vehicle and equipment tracking and data logging

Lantronix Wins IoT Global Award for Its FOX3 Series Telematic Gateway

Lantronix FOX3 Series gateway enables the LACOS farm equipment telemetry system to deliver actionable insights for maximum efficiency and cost savings

FOX Series for Critical Asset Monitoring Part Numbers

Lantronix Part #	Name	Description	Order Now
Sorry, no parts were found that match that search query.
FOX Promotion Kit - Recommended For New Customers
FOX4-PROMO	FOX Evaluation Kit	/! Note: FOX device sold separately Cables: Installation Cables 60048, 60353, 60044, 60286 Antennas: External Antennas for Cellular and GNSS Premium Features: All Included Evaluation Box: Yes Power Supply: Yes USB to Serial Converter: Yes	Buy Now
RS-485 Unit - Single Pack
F33H502S	FOX3 - Europe, North America (AT&T), Australia	4G LTE M & NB1: B2, B3, B4, B5, B8, B12, B13, B20; 2G Fallback Positioning: GNSS & Accelerometer Antenna: Internal & External Interfaces: 1x RS-232, 1x RS-485, 3x I/O, I2C, RTC, 1-Wire, CANbus Battery: Yes	Buy Now
RS-485 Unit With BLE - Single Pack
F43H502S	FOX4 - Europe, North America (AT&T Firstnet), Australia, Singapore	4G LTE M & NB2: B1, B2, B3, B4, B5, B8, B12, B13, B18, B19, B20, B25, B26, B28, B66, B85; 2G Fallback Positioning: GNSS & Accelerometer Antenna: Internal & External Interfaces: 1x RS-232, 1x RS-485, 3x I/O, I2C, RTC, 1-Wire, CANbus, BLE 5.2, Wi-Fi 4 Battery: Yes	Contact Us
F43H507S	FOX4 - Japan	4G LTE M & NB2: B1, B2, B3, B4, B5, B8, B12, B13, B18, B19, B20, B25, B26, B28, B66, B71, B85 Positioning: GNSS & Accelerometer Antenna: Internal & External Interfaces: 1x RS-232, 1x RS-485, 3x I/O, I2C, RTC, 1-Wire, CANbus, BLE 5.2, Wi-Fi 4 Battery: Yes	Buy Now
F43H50FS	FOX4 - Europe, North America (AT&T Firstnet), Australia, Singapore	4G LTE M & NB2: B1, B2, B3, B4, B5, B8, B12, B13, B18, B19, B20, B25, B26, B28, B66, B85 Positioning: GNSS & Accelerometer Antenna: Internal & External Interfaces: 1x RS-232, 1x RS-485, 3x I/O, I2C, RTC, 1-Wire, CANbus, BLE 5.2, Wi-Fi 4 Battery: Yes	Buy Now
F44H502S	FOX4 - Europe	4G LTE Cat-1: B1, B3, B7, B8, B20, B28; 2G Fallback Positioning: GNSS & Accelerometer Antenna: Internal & External Interfaces: 1x RS-232, 1 xRS-485, 3x I/O, I2C, RTC, 1-Wire, CANbus, BLE 5.2, Wi-Fi 4 Battery: Yes	Contact Us
SOFTWARE ACTIVATED PREMIUM FEATURE
1000000	ECO DRIVE	PREMIUM FEATURE 1: ECO DRIVE GPS	Contact Us
1000104	LUA	PREMIUM FEATURE 11: LUA	Contact Us
1000002	AES 128	PREMIUM FEATURE 2: AES 128	Contact Us
1000003	INDEXED HISTORY	PREMIUM FEATURE 3: INDEXED HISTORY	Contact Us
1000005	CAN BUS	PREMIUM FEATURE 5: CH/FMS/OBDII	Contact Us
1000008	EXTENDED ALARMS	PREMIUM FEATURE 8: EXTENDED ALARMS	Contact Us
1000009	EXTENDED GEOFENCE	PREMIUM FEATURE 9: EXTENDED GEOFENCE	Contact Us
CAN and IO extension box
60149	CAN and IO extension box	CAN and IO extension box. A high-quality accessory for the FOX3 series with a mini-USB port and a 16pin MOLEX connector with CAN-Bus interface supporting up to 14 additional CAN-IDs and up to 50 variables, D8 interface for digital tachographs with VDO and the Stoneridge formats and 8 x IOs. Requires cable CA38 to interface it with the vehicle’s signals/external system.	Buy Now
Input/Output extension box
60100	Input/Output extension box	Input/Output extension box. A high-quality accessory for the FOX3 series with a mini-USB port and a 16pin MOLEX connector with 13 additional IOs. Requires cable CA38 to interface it with the vehicle’s signals/external system.	Contact Us
Installation Cable with 6-pin and 4-pin Connectors
60048	Installation Cable with 6-pin and 4-pin Connectors	FOX3 accessory port cable with 6pin (2×3) connector, 4pin (2×2) UCOM connector for connecting and powering RFID/NFC reader, 1.50 m long and 6 x open end wires. Refer to the Installation Guide for a description of each cable.	Contact Us
8-pin Installation Cable
60036	8-pin Installation Cable	FOX3 and BOLERO40 main port extended installation cable with 8pin (2×4) connector, 1.5 m long with 8 x open ends wires. Refer to the Installation Guide for a description of each cable.	Contact Us
8-pin Installation Cable with Fuse
60338	8-pin Installation Cable with Fuse	FOX3 main port extended installation cable with 8pin (2×4) connector, 2A-blade-fuse, 1.5 m long with open end wires. Refer to the Installation Guide for a description of each cable.	Contact Us
Service and Power Cable
60044	Service and Power Cable	FOX3 and BOLERO40 service and power cable with 8pin (2×4) Molex connector, car charger, RS-232 female connector, 1.5 m cable length with 2A-fuse.	Contact Us
Cable
60353	Extended installation Cable	FOX3 main port extended installation cable with 8pin (2×4) connector, 4pin (2×2) UCOM connector for connecting and powering RFID/NFC reader, 1.50 m long, 2A-blade-fuse and 6 x open end wires. Refer to the Installation Guide for a description of each cable.	Buy Now
Cable
60286	Power and OBDII Connection Cable	FOX3 and BOLERO40 power and OBDII connection cable, 1.5 long with 8pin (2×4) connector, OBDII connector and a separate ignition (IGN) wire. This cable is compatible with all OBDII-compliant vehicles. Refer to the Installation Guide for a description of each cable.	Contact Us

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