Description
CalAmp LMU-2650MB — LTE Cat-M1 24-Pin Advanced Fleet Telematics Gateway with EdgeCore Intelligence
The CalAmp LMU-2650MB is an advanced LTE Cat-M1 telematics gateway purpose-built for light- and medium-duty vehicles and powered assets. It combines multi-constellation GNSS, extensive vehicle I/O, Bluetooth 5.x, dual TTL serial interfaces, 1-Wire connectivity, a three-axis accelerometer, PEG2™ programmable intelligence, EdgeCore firmware, and an 1100 mAh Lithium Iron Phosphate backup battery in a compact 24-pin platform. CalAmp positions the device as a next-generation gateway with increased processing power, connectivity, memory and battery capability for sophisticated fleet and IoT deployments. (CalAmp)
The LMU-2650MB is particularly suited to installations requiring more than basic GPS tracking. Its four digital inputs, three digital outputs, two analog inputs, two TTL serial ports, USB interface, 1-Wire interface and switched VIN output allow it to interact with sensors, vehicle circuits and third-party peripherals. CalAmp's EdgeCore architecture also allows compute-intensive and latency-sensitive applications to execute directly on the telematics hardware. (CalAmp)
Advanced Multi-Constellation GNSS Vehicle Location
The LMU-2650MB incorporates a 55-channel hybrid GNSS receiver supporting GPS, GLONASS, BeiDou, Galileo and QZSS. CalAmp specifies approximately 2.5-meter CEP open-sky positioning accuracy, providing precise location data for commercial fleet, vehicle and powered-asset applications. (CalAmp)
GNSS tracking sensitivity is specified at -163 dBm, with acquisition sensitivity of -155 dBm for hot starts and -148 dBm for cold starts. Position updates are supported at rates of up to 5 Hz, and the platform supports Assisted GPS (AGPS) location assistance. (CalAmp)
These capabilities make the LMU-2650MB suitable for real-time vehicle location, trip history, route monitoring, geofencing, utilization reporting, theft recovery and event-driven fleet telematics.
Global LTE Cat-M1 Connectivity with 2G Fallback
The LMU-2650MB provides LTE Cat-M1 connectivity with broad global frequency support. CalAmp lists LTE operation across B1, B2, B3, B4, B5/B26, B8, B12/B13/B28, B18/B19/B20 and B39/B25. (CalAmp)
The global variant also supports GSM 850/900/1800/1900 MHz fallback, providing additional connectivity options where compatible 2G service remains available. CalAmp describes this LTE Cat-M1 plus 2G architecture as supporting deployment in global markets. (CalAmp)
Supported data communications include:
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SMS
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UDP packet data
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TCP
The cellular, GNSS and Bluetooth antennas are all internally integrated, simplifying installation and eliminating the need to route separate external antennas. (CalAmp)
Comprehensive 24-Pin Vehicle I/O
One of the strongest features of the LMU-2650MB is its extensive 24-pin, 3 mm-pitch power and I/O interface. This gives the device considerably more integration capability than a basic vehicle-location tracker. (CalAmp)
The LMU-2650MB provides:
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1 fixed-bias ignition input
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4 configurable digital inputs
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3 digital outputs
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2 analog inputs
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2 TTL serial ports
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1 USB interface
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1 switched VIN output
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1 1-Wire® interface
The four digital inputs support selectable high- or low-bias operation over 0–32 VDC. The three digital outputs are 150 mA open-collector outputs, while both external ADC analog inputs support 0–32 VDC signals. (CalAmp)
This extensive I/O architecture allows appropriately engineered installations to monitor or interact with ignition circuits, switches, relays, sensors and other vehicle or equipment systems.
Dual TTL Serial & USB Connectivity
The LMU-2650MB incorporates two TTL serial ports with switched power, providing connectivity for compatible external peripherals and accessories. It also provides a USB interface, further expanding configuration and integration options. (CalAmp)
For specialized telematics applications, these interfaces can be particularly valuable when the gateway needs to communicate with external hardware rather than simply report its own location and motion information.
CalAmp specifically emphasizes the LMU-2650MB's ability to simplify the integration of third-party sensors and peripherals through its EdgeCore platform. (CalAmp)
Dual Analog Inputs
Unlike many compact vehicle trackers, the LMU-2650MB provides two external ADC analog inputs, each supporting signals from 0–32 VDC. (CalAmp)
Analog inputs provide additional flexibility for telematics installations where the system needs to monitor variable electrical signals from compatible sensors or equipment.
When combined with the digital I/O, serial interfaces and programmable edge intelligence, these inputs allow the LMU-2650MB to serve as a flexible vehicle and asset sensor gateway rather than merely a GPS location device.
1-Wire® Peripheral Integration
The LMU-2650MB incorporates a dedicated 1-Wire® interface. CalAmp's product documentation identifies this interface for applications including driver identification and temperature sensing. (CalAmp)
This provides an additional method for integrating compatible peripherals without consuming the gateway's conventional digital, analog or serial interfaces.
Driver identification can allow fleet systems to associate vehicle activity with individual operators, while temperature sensing can support specialized fleet, cargo or equipment-monitoring applications.
Bluetooth 5.x Connectivity
Integrated Bluetooth 5.x provides a modern short-range wireless interface for compatible sensors, peripherals and mobile applications. CalAmp's current product page specifies an internal BLE antenna and Bluetooth 5.x support; an earlier technical sheet describes the platform as BLE 5.2 capable. (CalAmp)
Bluetooth connectivity expands the LMU-2650MB beyond wired vehicle interfaces by allowing compatible nearby devices to communicate with the telematics gateway.
CalAmp also identifies interfacing with mobile applications and simplifying third-party sensor and peripheral integration among the EdgeCore platform's application capabilities. (CalAmp)
Advanced Driver Behavior & Motion Detection
The LMU-2650MB incorporates a built-in three-axis accelerometer with improved accuracy. CalAmp identifies its applications as:
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Driver-behavior monitoring
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Impact detection
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Motion sensing
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Tilt detection (CalAmp)
Because the accelerometer is integrated directly into the gateway, these capabilities require no external motion sensor.
When combined with GNSS positioning and programmable device logic, motion information can provide fleet-management systems with additional context surrounding vehicle movement and significant operational events.
EdgeCore Firmware
The LMU-2650MB is built around CalAmp's EdgeCore firmware and the ThreadX real-time operating system. CalAmp describes EdgeCore as a secure, reliable and scalable platform providing access to its EdgeApp development capabilities. (CalAmp)
EdgeCore allows developers to:
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Execute compute-intensive applications locally on telematics hardware
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Address latency-sensitive applications
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Develop proprietary device functionality
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Interface with mobile applications
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Integrate third-party sensors and peripherals (CalAmp)
This architecture makes the LMU-2650MB especially attractive for solution providers requiring custom telematics functionality at the edge rather than relying exclusively on cloud-side processing.
PEG2™ Programmable Edge Intelligence
The LMU-2650MB incorporates PEG2™ embedded intelligence, allowing device functionality to be updated or new edge applications to be developed. (CalAmp)
Programmable edge processing allows supported events and conditions to be evaluated directly by the telematics gateway. Application logic can therefore incorporate information from GNSS location, ignition state, accelerometer events, digital and analog inputs and connected peripherals.
Processing events locally can reduce unnecessary network traffic, improve response time and allow a telematics solution to transmit information according to application-specific business rules.
Hosted Application Support
CalAmp equips the LMU-2650MB with memory specifically intended to support hosted applications. The current product page specifies:
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1 MB program flash
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2 MB file-system flash
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10 MB RAM (CalAmp)
This additional computing and storage capability supports the LMU-2650MB's role as an intelligent telematics gateway rather than a simple location-reporting device.
1100 mAh Lithium Iron Phosphate Backup Battery
A significant feature of the LMU-2650MB is its 1100 mAh Lithium Iron Phosphate (LiFePO₄) internal backup battery. (CalAmp)
CalAmp highlights Lithium Iron Phosphate technology for its longer lifespan, improved safety, lighter weight, and improved charge/discharge efficiency. (CalAmp)
The backup battery helps maintain device functionality when primary vehicle power is interrupted, making it valuable for fleet-security, power-disconnection detection and other applications where continued telematics operation after primary-power loss is desirable.
CalAmp specifies a battery charging-temperature range of 0°C to +45°C. (CalAmp)
Low-Power Vehicle Operation
Despite its substantial communications, processing and I/O capabilities, the LMU-2650MB provides low-power operating modes intended to minimize impact on the host vehicle battery.
CalAmp specifies typical consumption of:
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Less than 500 µA at 12 V in low-power sleep
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Approximately 25 mA at 12 V during radio-active sleep
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Approximately 50 mA at 12 V during GPS tracking with the cellular modem idle (CalAmp)
Low-power sleep is particularly valuable for commercial vehicles and equipment that may remain parked or unused for extended periods.
12/24-Volt Vehicle Electrical Architecture
The LMU-2650MB is designed for both 12 V and 24 VDC vehicle electrical systems.
CalAmp specifies:
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9–30 VDC during startup and normal operation
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7–32 VDC for momentary operation (CalAmp)
This broad input range makes the device suitable for many passenger, light-commercial and medium-duty vehicle applications.
Compact 24-Pin Design
Despite its extensive I/O and substantial internal backup battery, the LMU-2650MB maintains a compact physical footprint.
CalAmp specifies dimensions of:
4.0 × 2.2 × 0.8 inches
106 × 57 × 22 mm
The device weighs approximately:
3.4 oz / 97 g (CalAmp)
Primary power and I/O are provided through a 24-pin, 3 mm-pitch connector, while cellular service uses an internal 2FF SIM. Three status LEDs provide visual indication for GPS, cellular and BLE operation. (CalAmp)
Compatible CalAmp Harnesses
CalAmp's current LMU-2650MB specification sheet identifies three compatible cable assemblies:
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5C348 — 2-meter fused power/ground/ignition harness
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5C360 — 2-meter fully connectorized harness
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5C735 — 2-meter breakout cable (CalAmp)
This is particularly useful for commercial deployments because the same LMU-2650MB platform can be installed with different harness configurations depending on the amount of I/O and peripheral connectivity required.
Environmental & Fleet-Grade Design
The LMU-2650MB is designed for professional vehicle telematics environments. CalAmp specifies:
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-30°C to +60°C while connected to primary power
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-20°C to +60°C while operating on the internal battery
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-20°C to +25°C for up to six months for long-term battery storage
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85% RH at 50°C, non-condensing (CalAmp)
Shock and vibration specifications reference U.S. Military Standards 202G and 810F and SAE J1455, while ESD performance is specified to IEC 61000-4-2 at a 4 kV test level. (CalAmp)
CalAmp Application & Telematics Cloud Integration
The LMU-2650MB supports both the CalAmp application and CalAmp Telematics Cloud (CTC). CalAmp states that customers can integrate telematics information into their own applications through APIs or use CalAmp's application to manage vehicles and assets. (CalAmp)
An official LMU-2650MB technical sheet further describes CalAmp Telematics Cloud as providing device-data streams through RESTful APIs. (CalAmp)
This gives solution providers flexibility to deploy the LMU-2650MB within CalAmp's software environment or integrate device data into proprietary fleet-management, reporting and enterprise IoT applications.
Regulatory & Carrier Certifications
CalAmp's current product page lists the LMU-2650MB with FCC, IC, PTCRB and RoHS certifications, while CE is shown as pending on the current specification. (CalAmp)
An earlier CalAmp specification also identifies AT&T and Verizon carrier certifications for the platform. Because certifications can vary by exact hardware revision and regional SKU, carrier compatibility should be confirmed for the specific LMU-2650MB part number being deployed. (CalAmp)
Key Technical Features
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LTE Cat-M1 cellular connectivity
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Broad global LTE frequency support
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GSM 850/900/1800/1900 MHz fallback
-
SMS, UDP packet data and TCP communications
-
Hybrid GPS, GLONASS, BeiDou, Galileo and QZSS
-
55-channel GNSS receiver
-
Approximately 2.5 m CEP open-sky positioning accuracy
-
-163 dBm GNSS tracking sensitivity
-
-155 dBm hot-start acquisition sensitivity
-
-148 dBm cold-start acquisition sensitivity
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Up to 5 Hz location updates
-
Assisted GPS capability
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Internal cellular, GNSS and BLE antennas
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Bluetooth 5.x
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24-pin, 3 mm-pitch power and I/O connector
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One fixed-bias ignition input
-
Four configurable high/low-bias digital inputs
-
Three 150 mA open-collector digital outputs
-
Two 0–32 VDC analog inputs
-
Two TTL serial ports with switched power
-
USB interface
-
1-Wire® interface
-
One switched VIN output
-
Built-in three-axis accelerometer
-
Driver-behavior monitoring
-
Impact detection
-
Motion sensing
-
Tilt detection
-
ThreadX real-time operating system
-
CalAmp EdgeCore firmware
-
PEG2™ programmable edge intelligence
-
Hosted EdgeApp application support
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1 MB program flash
-
2 MB file-system flash
-
10 MB RAM
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1100 mAh LiFePO₄ backup battery
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Typical low-power sleep consumption below 500 µA at 12 V
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12/24 VDC vehicle compatibility
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9–30 VDC startup and normal operation
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7–32 VDC momentary operating range
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Internal 2FF SIM
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Three GPS/cellular/BLE status LEDs
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Dimensions: 106 × 57 × 22 mm
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Weight: 97 g / 3.4 oz
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Operating temperature down to -30°C on primary power
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MIL-STD 202G/810F and SAE J1455 referenced environmental testing
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CalAmp application support
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CalAmp Telematics Cloud integration
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RESTful API integration
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FCC, IC, PTCRB and RoHS certifications (CalAmp)
Ideal Applications
The CalAmp LMU-2650MB is particularly well suited for light- and medium-duty fleet tracking, commercial vehicle telematics, service and delivery fleets, powered-asset monitoring, vehicle utilization, driver-behavior monitoring, fleet security, sensor integration, driver identification, temperature monitoring, equipment monitoring, custom edge applications and enterprise IoT deployments. CalAmp specifically describes it as a gateway purpose-built for light- and medium-duty vehicles and assets. (CalAmp)
Its combination of LTE Cat-M1 connectivity, five-constellation GNSS, Bluetooth 5.x, extensive 24-pin I/O, dual analog inputs, dual TTL serial ports, USB, 1-Wire connectivity, EdgeCore firmware, PEG2 intelligence, hosted application resources and an 1100 mAh LiFePO₄ backup battery makes the LMU-2650MB especially appropriate for applications requiring an intelligent, expandable telematics gateway rather than a basic GPS tracker.
CalAmp LMU-2650MB official product specifications
Official CalAmp LMU-2650MB specification sheet (PDF)
SKU DESCRIPTION: LMU2650, CATM, BG96, BLE, INT ANT, 1100 MAH BATT, DM-CTC US, GEN-HW-AU