LMU5541LW-H000-G1000

CalAmp LMU-5541 — LTE Cat-4 Advanced Telematics Router with Wi-Fi, Ethernet, Vehicle Bus & Linux Edge Computing

The CalAmp LMU-5541 is a feature-rich LTE Cat-4 telematics router and mobile communications gateway designed for advanced fleet telematics, connected-vehicle solutions, vehicle-area networks, mobile networking, and enterprise vehicle applications. Unlike conventional GPS trackers, the LMU-5541 combines global LTE Cat-4 cellular connectivity, multi-constellation GNSS, dual-band Wi-Fi, dual-mode Bluetooth, two Ethernet ports, extensive digital and analog I/O, RS-232/RS-485 and TTL serial interfaces, USB Host connectivity, vehicle-bus integration, Linux OpenWrt, CalAmp PEG™ edge intelligence, and an embedded application-development environment. (CalAmp)

CalAmp positions the LMU-5541 as an all-in-one mobile communications solution. Its combination of secure IP-router functionality and vehicle telematics allows the unit to act simultaneously as a GPS/vehicle-data gateway and as a communications hub for other onboard equipment. The Linux-based platform also enables custom applications to execute directly on the gateway, making the LMU-5541 particularly well suited to sophisticated OEM, fleet, public-safety, transit, field-service, and industrial mobile-networking applications. (CalAmp)

Global LTE Cat-4 Cellular Connectivity

The LMU-5541 provides substantially higher-bandwidth cellular connectivity than CalAmp's Cat-M1 tracking platforms through its LTE Cat-4 modem.

The global variant supports LTE bands:

B1 / B2 / B3 / B4 / B5 / B7 / B8 / B12 / B13 / B18 / B19 / B20 / B25 / B26 / B28 / B38 / B39 / B40 / B41. (CalAmp)

The platform also supports HSPA/UMTS across bands I, II, IV, V, VI, VIII and XIX, together with GSM/GPRS 850/900/1800/1900 MHz. This multi-generation network architecture provides additional deployment flexibility in regions where supported legacy cellular networks remain operational. (CalAmp)

Advanced IP Router Functionality

A defining capability of the LMU-5541 is its integrated secure IP-router functionality. CalAmp lists extensive networking support, including:

• TCP/IP

• UDP/IP

• DHCP

• HTTP

• IP routing

• PPP

• HTTP web server

• Telnet

• DHCP server

• DDNS and DDNS client

• NAT

• IP port forwarding

• TFTP

• NMEA

• TAIP

• TSIP (CalAmp)

This networking capability allows the LMU-5541 to serve as the central communications gateway for other IP-enabled equipment installed in a vehicle.

Instead of every onboard system requiring its own cellular modem and connection, compatible equipment can potentially communicate through the LMU-5541's cellular and local-area networking infrastructure.

Dual 10/100 Ethernet Ports

The LMU-5541 incorporates two 10/100 Base-T RJ45 Ethernet ports. (CalAmp)

Ethernet connectivity is an important differentiator from conventional telematics trackers. It allows compatible IP-based equipment to communicate directly with the gateway over a standard wired network.

This makes the LMU-5541 particularly useful as the foundation of a Vehicle Area Network (VAN) connecting onboard computers, controllers, cameras, terminals, gateways, diagnostic equipment, or other compatible Ethernet devices.

CalAmp specifically identifies Vehicle Area Network as one of the primary market applications for the LMU-5541. (CalAmp)

Dual-Band Wi-Fi — 802.11 a/b/g/n/ac

The LMU-5541 provides integrated 802.11 a/b/g/n/ac Wi-Fi operating on both 2.4 GHz and 5 GHz bands. (CalAmp)

The Wi-Fi subsystem supports both:

• Access Point operation

• Client operation

CalAmp specifies support for as many as 10 concurrent users. (CalAmp)

This allows the gateway to create a local wireless network within or around the vehicle, providing compatible onboard equipment with access to the LMU-5541's communications infrastructure.

Wi-Fi client operation also allows the LMU-5541 to connect to an existing compatible wireless network where appropriate.

Dual-Mode Bluetooth & BLE 4.2

The LMU-5541 provides dual-mode Bluetooth, supporting both:

• Bluetooth Classic

• Bluetooth Low Energy 4.2 (CalAmp)

CalAmp specifies a dual-mode Wi-Fi/BLE external antenna, providing the wireless interface needed for compatible Bluetooth devices and peripherals. (CalAmp)

Bluetooth expands the gateway's connectivity beyond wired Ethernet, serial, USB, vehicle bus, and general-purpose I/O, providing another interface for compatible nearby sensors and equipment.

Advanced Hybrid GNSS Vehicle Location

The LMU-5541 incorporates a 55-channel hybrid GPS/GLONASS/SBAS GNSS receiver supporting the WAAS, EGNOS, and MSAS augmentation systems. (CalAmp)

CalAmp specifies approximately:

• 2.0 m CEP open-sky accuracy under its stated 24-hour static SBAS conditions

• -167 dBm tracking sensitivity

• -156 dBm hot-start acquisition sensitivity

• -148 dBm cold-start acquisition sensitivity

• Location update rates of up to 4 Hz

• AGPS location assistance capability (CalAmp)

These capabilities provide the positioning foundation for fleet tracking, route history, vehicle utilization, geofencing, dispatching, security, and other location-driven applications.

External GNSS Antenna

The LMU-5541 uses an external GPS/GNSS antenna, allowing installers to position the antenna independently of the main gateway. (CalAmp)

External antenna placement is especially valuable when the router itself needs to be installed beneath dashboards, inside equipment cabinets, behind metal structures, or in other locations that may not provide optimal satellite visibility.

CalAmp lists necessary GPS, cellular, and combined GPS/cellular antennas among the available product options. (CalAmp)

External Cellular & Diversity Antennas

The LMU-5541 also employs external antennas for:

• Primary cellular

• Cellular diversity

• Wi-Fi

• GPS/GNSS (CalAmp)

This external-antenna architecture provides considerable flexibility when installing the communications gateway in vehicles where antenna positioning is important for RF performance.

Light & Heavy-Duty Vehicle BUS Support

CalAmp identifies vehicle BUS support for both light-duty OBD-II and heavy-duty J1939/J1708 protocols as a principal feature of the LMU-5541. (CalAmp)

Rather than restricting the platform to one vehicle class, this architecture allows compatible installations to address a broad range of vehicles.

For vehicle ECU connectivity, CalAmp identifies two dedicated accessory families:

• VPOD2 Vehicle ECU Interface

• JPOD2 Truck ECU Interface (CalAmp)

CalAmp also lists internal, external, and optional jPOD™ truck ECU interface configurations among the LMU-5541's available product options. (CalAmp)

VPOD2 Vehicle ECU Interface

The VPOD2 Vehicle ECU Interface is identified by CalAmp as an LMU-5541 accessory for vehicle ECU integration. (CalAmp)

For your DCS catalog, this is particularly relevant because your 134612-VPOD2 product can be cross-sold as an accessory for the LMU-5541 where the intended vehicle and configuration require the VPOD2 interface.

The specific ECU data available depends on the vehicle, protocol, interface hardware, firmware configuration, and application, so the VPOD2 should be presented as a vehicle-interface accessory rather than implying that every diagnostic parameter is available on every vehicle.

JPOD2 Heavy-Duty Truck ECU Interface

For heavy-duty applications, CalAmp identifies the JPOD2 Truck ECU Interface as an LMU-5541 accessory. (CalAmp)

This provides a path for incorporating compatible heavy-duty J1939/J1708 vehicle information into an LMU-5541 telematics deployment.

The combination of heavy-duty ECU information, GPS position, cellular connectivity, local networking, and edge processing makes the LMU-5541 particularly appropriate for sophisticated commercial trucking and mobile-equipment applications.

Seven Configurable Digital Inputs

The LMU-5541 provides extensive general-purpose I/O, beginning with:

• 7 configurable digital inputs

• Selectable high/low bias

• 0–30 VDC

• 1 low-bias ignition input (CalAmp)

These inputs can be incorporated into appropriately engineered applications for monitoring switches, sensors, alarms, vehicle circuits, equipment states, and other discrete electrical signals.

Seven 200 mA Digital Outputs

The gateway provides seven relay-driver digital outputs, each rated at 200 mA. (CalAmp)

This unusually large number of outputs gives system integrators substantial flexibility when designing custom vehicle-control or peripheral-management applications.

Appropriately engineered outputs can be used to interface with external relays, indicators, alarms, or other compatible electrical systems.

Five Analog Inputs

The LMU-5541 also provides five general-purpose analog-to-digital inputs supporting signals from 0–30 VDC. (CalAmp)

Analog inputs enable the gateway to monitor variable electrical signals rather than only simple on/off states.

This makes the LMU-5541 particularly useful in sensor-rich applications where external devices produce voltage-based measurements.

Dual 1-Wire® Interfaces

The gateway incorporates two 1-Wire® interfaces, which CalAmp identifies for applications including:

• Driver identification

• Temperature sensing (CalAmp)

Dual 1-Wire connectivity provides additional expansion capacity for compatible peripherals while preserving the LMU-5541's conventional digital, analog, serial, Ethernet, USB, Bluetooth, and vehicle-bus interfaces.

RS-232 / RS-485 Serial Interface

The LMU-5541 provides a DB-9 serial interface supporting RS-232 and RS-485 communications. (CalAmp)

This is particularly useful in industrial and specialized fleet environments where external hardware communicates through conventional serial protocols.

CalAmp also lists an RS-232 8-wire adapter cable among the available LMU-5541 accessories and specifies support for applications including PPP, AT commands, and NMEA GPS output. (CalAmp)

TTL Serial Interface

In addition to its DB-9 RS-232/RS-485 interface, the LMU-5541 provides a 5-pin TTL-level serial interface with switched power. (CalAmp)

Having both conventional serial and TTL connectivity gives telematics integrators additional flexibility when connecting specialized sensors, controllers, and peripheral devices.

USB Host & USB On-The-Go

The LMU-5541 provides two USB interfaces:

• USB On-The-Go — Mini

• USB Host — Type A (CalAmp)

USB Host functionality is especially useful because it allows compatible USB peripherals to be incorporated into the vehicle communications architecture.

Combined with Ethernet, Wi-Fi, Bluetooth, serial, 1-Wire, vehicle bus, and general-purpose I/O, USB helps make the LMU-5541 one of the most connectivity-rich CalAmp gateways in this product generation.

Integrated 3-Axis Accelerometer

A built-in three-axis accelerometer provides onboard motion sensing for:

• Driver-behavior monitoring

• Impact detection

• Motion sensing

• Tilt detection (CalAmp)

Motion information can be combined with GNSS position, vehicle data, and programmable edge logic to provide additional operational context for fleet applications.

Linux OpenWrt Operating System

One of the most important differences between the LMU-5541 and conventional CalAmp tracking devices is its Linux OpenWrt operating system. (CalAmp)

CalAmp provides an SDK for custom application development, enabling developers and solution providers to create software that executes directly on the gateway.

This transforms the LMU-5541 from a conventional GPS modem into a programmable mobile edge-computing platform.

Custom software can potentially interact with the gateway's networking, location, vehicle, sensor, and peripheral interfaces according to the capabilities exposed by CalAmp's development environment.

PEG™ Edge Intelligence

The Linux platform also incorporates CalAmp's PEG™ engine, providing programmable intelligence directly at the edge. CalAmp describes PEG as enabling customers to update device functionality or develop new edge applications. (CalAmp)

This allows supported events and conditions to be evaluated locally rather than requiring every decision to be performed by a remote cloud service.

For sophisticated fleet solutions, the combination of PEG and Linux application development provides significantly greater customization potential than a basic fixed-function GPS tracker.

Internal Backup Battery

The LMU-5541 supports an internal Lithium-Ion backup battery with capacity up to 1000 mAh. (CalAmp)

CalAmp specifies a charging-temperature range of:

0°C to +45°C

Backup power can allow the gateway to remain operational for a period after primary vehicle power is interrupted, which can be valuable for security, power-loss detection, and controlled shutdown or reporting applications.

Advanced Power Management

CalAmp provides multiple sleep modes to reduce the LMU-5541's electrical load when full operation is unnecessary.

Typical consumption is specified at:

• Less than 2 mA at 12 V — deep sleep

• 20 mA at 12 V — radio-active sleep

• Approximately 300 mA at 12 V — active tracking with GPS and cellular enabled (CalAmp)

These power-management modes are particularly important given the gateway's extensive cellular, Wi-Fi, Ethernet, Bluetooth, USB, serial, and processing capabilities.

12/24-Volt Vehicle Electrical Architecture

The LMU-5541 supports both 12 V and 24 VDC vehicle electrical systems.

CalAmp specifies:

• 9–30 VDC startup and normal operation

• 8–32 VDC momentary operation (CalAmp)

This broad input range makes the gateway suitable for a wide variety of passenger, commercial, heavy-duty, and specialized vehicle applications.

Physical Design

CalAmp specifies dimensions of approximately:

5.8 × 4.0 × 1.2 inches
146 × 102 × 40 mm

Weight is approximately:

8.0 oz / 227 g. (CalAmp)

The LMU-5541 provides:

• 4-pin connector — power, ignition and ADC

• 22-pin connector — general I/O

• External GPS antenna

• External cellular antenna

• External cellular diversity antenna

• External Wi-Fi antenna

• Internal SIM access

• 2 × RJ45 10/100 Ethernet

• Mini USB OTG

• USB Type-A Host (CalAmp)

Five Integrated Status LEDs

The gateway provides five visual status indicators for:

• Power

• Communications

• GPS

• Wi-Fi

• Bluetooth (CalAmp)

These indicators provide installers and service technicians with immediate diagnostic information during installation, commissioning, and troubleshooting.

Fleet-Grade Environmental Design

The LMU-5541 is designed for professional vehicle environments.

CalAmp specifies:

• -30°C to +60°C on primary power

• -10°C to +60°C while operating from internal battery

• -20°C to +25°C for up to six months for long-term storage with battery

• 85% RH at 50°C, non-condensing (CalAmp)

Shock and vibration performance references U.S. Military Standards 202G and 810F and SAE J1455.

ESD performance is specified to IEC 61000-4-2 at a 4 kV test level. (CalAmp)

CalAmp PULS™ Remote Device Management

The LMU-5541 supports CalAmp PULS™ API Device Management, which CalAmp specifies for remotely:

• Monitoring devices

• Managing devices

• Upgrading firmware

• Configuring devices

• Troubleshooting deployed hardware (CalAmp)

This is especially valuable for large distributed fleets because routine administration can be performed without physically accessing every gateway.

CalAmp notes that applicable cloud and software functions are subscription-enabled services. (CalAmp)

CalAmp Telematics Cloud & RESTful API Integration

The LMU-5541 supports CalAmp Telematics Cloud (CTC), with CalAmp specifying device-data streaming through RESTful APIs. (CalAmp)

This provides a path for integrating LMU-5541 data into proprietary fleet-management systems, enterprise applications, reporting engines, analytics platforms, and third-party software.

For DCS and other telematics solution providers, this API capability makes the LMU-5541 suitable for deployments where CalAmp hardware must operate as part of a larger custom software ecosystem.

Compatible CalAmp Accessories

CalAmp identifies several accessories specifically for the LMU-5541:

• VPOD2 Vehicle ECU Interface

• JPOD2 Truck ECU Interface

• RS-232 8-wire adapter cable

• I/O wiring harness

• GPS antennas

• Cellular antennas

• Combined GPS/cellular antennas

• Optional jPOD™ truck ECU interfaces (CalAmp)

For your DCS catalog, the VPOD2 is particularly relevant because it creates a logical accessory relationship between the LMU-5541 and your existing 134612-VPOD2 SKU.

Regulatory & Industry Certifications

CalAmp lists the LMU-5541 with:

• FCC

• CE

• IC

• PTCRB

• RoHS (CalAmp)

Exact network, regional, and carrier compatibility should still be confirmed against the specific LMU-5541 SKU being deployed.

Key Technical Features

• Global LTE Cat-4 cellular connectivity

• LTE bands B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28/B38/B39/B40/B41

• HSPA/UMTS fallback

• GSM/GPRS 850/900/1800/1900 MHz

• Advanced TCP/IP networking and secure IP-router functionality

• NAT and IP port forwarding

• DHCP server/client functionality

• HTTP web server

• PPP support

• Dual 10/100 Base-T RJ45 Ethernet ports

• Dual-band 802.11 a/b/g/n/ac Wi-Fi

• 2.4 GHz and 5 GHz Wi-Fi

• Wi-Fi Access Point and client modes

• Up to 10 concurrent Wi-Fi users

• Bluetooth Classic + BLE 4.2

• 55-channel hybrid GPS/GLONASS/SBAS receiver

• WAAS, EGNOS, and MSAS augmentation

• Approximately 2.0 m CEP open-sky positioning accuracy

• -167 dBm GNSS tracking sensitivity

• -156 dBm hot-start acquisition

• -148 dBm cold-start acquisition

• Up to 4 Hz position updates

• AGPS capability

• External GPS antenna

• External cellular and diversity antennas

• External Wi-Fi antenna

• Light-duty OBD-II vehicle BUS support

• Heavy-duty J1939/J1708 support

• VPOD2 vehicle ECU interface compatibility

• JPOD2 truck ECU interface compatibility

• 7 configurable 0–30 VDC digital inputs

• 1 low-bias ignition input

• 7 × 200 mA relay-driver outputs

• 5 × 0–30 VDC analog inputs

• Dual 1-Wire interfaces

• DB-9 RS-232/RS-485 serial interface

• 5-pin TTL serial interface with switched power

• USB Mini OTG

• USB Type-A Host

• Built-in three-axis accelerometer

• Driver-behavior, impact, motion and tilt sensing

• Linux OpenWrt operating system

• SDK for custom application development

• PEG™ programmable edge intelligence

• Internal Lithium-Ion backup battery up to 1000 mAh

• Less than 2 mA @ 12 V typical deep sleep

• 12/24 VDC vehicle-system compatibility

• 9–30 VDC normal operating range

• 8–32 VDC momentary operating range

• Five Power/COMM/GPS/Wi-Fi/Bluetooth status LEDs

• Dimensions: 146 × 102 × 40 mm

• Weight: 227 g / 8.0 oz

• Primary-power operating range: -30°C to +60°C

• CalAmp PULS™ remote device management

• CalAmp Telematics Cloud

• RESTful API data streaming

• FCC, CE, IC, PTCRB and RoHS certifications (CalAmp)

Ideal Applications

The CalAmp LMU-5541 is particularly well suited for connected-vehicle solutions, vehicle-area networks, advanced fleet management, commercial trucking, mobile workforce vehicles, transit and transportation fleets, public-sector vehicles, utility fleets, service fleets, vehicle diagnostics, mobile networking, onboard Wi-Fi, Ethernet-connected vehicle equipment, industrial vehicle applications, custom Linux edge applications, and enterprise IoT deployments. CalAmp specifically identifies Connected Vehicle Solutions, Vehicle Area Network, and Fleet Management as primary market applications. (CalAmp)

Its combination of LTE Cat-4 broadband connectivity, dual Ethernet, dual-band Wi-Fi, Bluetooth, high-sensitivity GNSS, light- and heavy-duty vehicle BUS support, seven digital inputs, seven outputs, five analog inputs, dual 1-Wire, RS-232/RS-485, TTL serial, USB Host, Linux OpenWrt, PEG edge intelligence, and a custom application SDK makes the LMU-5541 particularly appropriate where the requirement goes beyond tracking and demands a true mobile communications router, vehicle-data gateway, and programmable edge-computing platform.

CalAmp LMU-5541 — Official Product Specifications

SKU DESCRIPTION: LMU5541, LTE CAT 4 (GLOBAL), 3G/2G FALLBACK, EXT ANT, WIFI HOTSPOT, 1000MAH BATT