HMU3640LB-KRDL-XXXX

CalAmp HMU-3640LB — Advanced Rugged LTE Cat-1 Telematics Gateway with Dual CAN, RS-232/RS-485 & BLE 5.2

The CalAmp HMU-3640LB is an advanced rugged telematics gateway engineered for heavy-duty vehicles, construction equipment, agricultural machinery, mining equipment, industrial assets, smart trailers, and other demanding fleet and IoT applications. Combining global LTE Cat-1 cellular connectivity with 3G/2G fallback, high-sensitivity GNSS positioning, dual CAN interfaces, J1939 support, RS-232/RS-485 serial communications, Modbus support, Bluetooth Low Energy 5.2, programmable digital and analog I/O, onboard motion sensing, PEG™ edge intelligence, EdgeApp32 application support, and an internal backup battery, the HMU-3640LB provides a powerful platform for advanced equipment and vehicle telematics. (CalAmp)

Designed specifically for harsh operating environments, the HMU-3640LB features an IP66/IP67 sealed enclosure, MIL-STD-referenced shock and vibration performance, an extended primary-power operating range up to +75°C, and a rugged 12-pin Mini-Deutsch connector. CalAmp positions the HMU-3640LB for industrial equipment manufacturers and asset-fleet operators in construction, agriculture, mining, and similar industries where conventional in-cab telematics hardware may not provide sufficient environmental protection. (CalAmp)

Advanced GNSS Vehicle & Equipment Location

The HMU-3640LB incorporates a 55-channel hybrid GPS/GLONASS/SBAS GNSS engine supporting satellite-based augmentation through WAAS, EGNOS and MSAS. CalAmp specifies approximately 2.0-meter CEP open-sky positioning accuracy under its stated 24-hour static SBAS test conditions. (CalAmp)

GNSS tracking sensitivity is specified at -167 dBm, with acquisition sensitivity of -156 dBm for hot starts and -148 dBm for cold starts. Location updates are supported at rates of up to 4 Hz, allowing the gateway to provide frequent position information for moving vehicles and equipment. (CalAmp)

The GNSS subsystem also provides anti-jamming support and is Assisted GPS (AGPS) capable, adding resilience and location-assistance capability to professional telematics deployments. (CalAmp)

These positioning capabilities make the HMU-3640LB suitable for applications involving real-time fleet visibility, equipment location, route history, utilization monitoring, geofencing, theft recovery, job-site management, and event-driven telematics reporting.

Global LTE Cat-1 Cellular Connectivity with 3G/2G Fallback

The HMU-3640LB provides extensive global cellular coverage through LTE Cat-1 with 3G and 2G fallback. CalAmp specifies support for both LTE-FDD and LTE-TDD networks. (CalAmp)

Supported LTE-FDD bands include:

B1 / B2 / B3 / B4 / B5 / B7 / B8 / B12 / B13 / B18 / B19 / B20 / B25 / B26 / B28 / B66

Supported LTE-TDD bands include:

B32 / B38 / B39 / B40 / B41

The gateway additionally supports WCDMA B1/B2/B4/B5/B6/B8/B19 and TD-SCDMA/GSM/EDGE bands B2/B3/B5/B8. (CalAmp)

Supported data communications include SMS, UDP packet data, TCP and TLS, giving telematics integrators multiple methods for securely transporting device, vehicle, sensor and equipment information to compatible backend platforms. (CalAmp)

Dual CAN Interfaces & SAE J1939 Support

One of the most important capabilities of the HMU-3640LB is its dual CAN interface architecture. The device provides two CAN inputs and supports the SAE J1939 heavy-duty vehicle interface standard. (CalAmp)

J1939 is widely used in heavy-duty commercial vehicles and industrial equipment, making the HMU-3640LB particularly suitable for telematics deployments involving trucks, construction equipment, agricultural machinery, mining equipment and other CAN-enabled heavy-duty assets.

Dual CAN connectivity provides additional integration flexibility where equipment contains multiple CAN networks or where a telematics gateway must interface with more than one supported vehicle or equipment data bus.

This capability differentiates the HMU-3640LB from conventional GPS trackers by allowing it to serve as an equipment-data gateway in addition to providing cellular and GNSS connectivity.

RS-232 & RS-485 Serial Connectivity

The HMU-3640LB provides a configurable serial interface supporting both RS-232 and RS-485 communications. (CalAmp)

These industry-standard serial interfaces significantly expand the range of equipment and peripherals that can be connected to the telematics gateway. RS-232 can be used with compatible conventional serial equipment, while RS-485 provides a differential communications architecture well suited to industrial environments and longer cable runs.

For OEMs, fleet operators and telematics integrators, serial connectivity provides a path for incorporating external controllers, sensors, displays and other compatible equipment into a connected telematics solution.

Modbus Protocol Support

The HMU-3640LB also supports the Modbus protocol over its serial architecture. (CalAmp)

Modbus is extensively used in industrial control and monitoring systems, making this capability particularly important for industrial IoT deployments. When used with compatible equipment, the HMU-3640LB can serve as a communications bridge between field equipment and remote telematics infrastructure.

This makes the gateway especially attractive for industrial machinery, generators, pumps, compressors, agricultural systems, construction equipment and other applications where Modbus-capable controllers or sensors are present.

Comprehensive Digital & Analog I/O

The HMU-3640LB provides configurable wired I/O for integration with vehicles and industrial equipment.

The interface includes:

• 1 fixed-bias ignition input

• 1 configurable digital input

• 1 digital output

• 1 analog input

• 1 RS-232/RS-485 serial interface

• 2 CAN inputs (CalAmp)

The configurable digital input supports selectable high- or low-bias operation across a 0–32 VDC range. The digital output uses an open-collector architecture rated at 150 mA, while the external ADC analog input supports signals from 0–32 VDC. (CalAmp)

This combination allows appropriately engineered installations to monitor or interact with ignition circuits, switches, sensors, relays, equipment-state signals, and other external electrical systems.

Bluetooth Low Energy 5.2

Integrated Bluetooth Low Energy 5.2 provides the HMU-3640LB with a modern short-range wireless interface for compatible sensors, tags, accessories and peripheral devices. (CalAmp)

BLE connectivity enables telematics deployments to incorporate additional wireless data sources without requiring every sensor or peripheral to be physically wired to the gateway.

This architecture can be useful for applications involving cargo monitoring, equipment identification, environmental sensing, proximity detection, wireless accessories, and other BLE-enabled industrial IoT applications.

The HMU-3640LB includes a dedicated status LED for Wi-Fi/Bluetooth status, in addition to GNSS, cellular and CAN indicators. (CalAmp)

Accelerometer & Gyroscope Motion Sensing

The HMU-3640LB incorporates built-in accelerometer and gyroscope sensing, giving the gateway the ability to incorporate motion-related information into telematics applications. CalAmp specifically highlights the integrated accelerometer and gyroscope among the platform's core capabilities. (CalAmp)

When combined with GNSS location, CAN data and programmable edge logic, onboard motion sensing can support applications involving equipment movement, operational events, driver behavior, impact-related events, orientation changes and asset activity detection.

This additional sensor information allows the HMU-3640LB to provide operational context beyond basic GPS position reporting.

PEG™ Edge Intelligence

The HMU-3640LB incorporates CalAmp's PEG™ edge-programming environment, allowing device behavior to be tailored to specific business requirements through CalAmp's no-code scripting architecture. (CalAmp)

Rather than transmitting every piece of raw information to a remote server for analysis, PEG enables supported business rules and event conditions to be processed directly by the telematics gateway.

This architecture can allow the HMU-3640LB to respond intelligently to combinations of location, ignition state, CAN information, digital and analog I/O, motion, serial data, and other available device inputs.

Edge processing can reduce unnecessary cellular communications while enabling faster recognition and reporting of operationally significant events.

EdgeApp32 Custom Edge Applications

For applications requiring functionality beyond configurable PEG scripting, the HMU-3640LB supports CalAmp EdgeApp32. CalAmp describes EdgeApp32 as an environment for developing edge applications with custom features that can scale across devices. (CalAmp)

This gives solution developers an additional layer of programmability for specialized telematics and industrial IoT applications.

The combination of PEG and EdgeApp32 makes the HMU-3640LB particularly attractive for OEM and enterprise applications where custom logic must operate directly on the telematics gateway rather than exclusively in a cloud environment.

Advanced Onboard Geofencing

The HMU-3640LB provides extensive onboard geofencing capabilities.

CalAmp specifies support for:

• 21 rectangle or radial zones

• Up to 5,400 radial zones or vertices (CalAmp)

Onboard geospatial processing can support applications involving job-site arrival and departure, unauthorized equipment movement, yard management, restricted areas, route compliance, customer-site activity and theft detection.

Because geofence processing can occur at the edge, geographic events can be recognized by the gateway without relying exclusively on continuous cloud-side location analysis.

20,000-Message Onboard Buffer

The HMU-3640LB provides storage for up to 20,000 buffered messages. (CalAmp)

Message buffering is particularly important for industrial and mobile equipment operating in remote locations where cellular coverage may be intermittent.

When connectivity is temporarily unavailable, supported telematics information can be retained locally for subsequent transmission. This helps provide a more complete operational record when equipment travels through cellular dead zones or works in areas with inconsistent network coverage.

Internal Backup Battery

The HMU-3640LB incorporates a 500 mAh Nickel-Metal Hydride (NiMH) internal battery pack. (CalAmp)

The internal battery provides backup power capability when primary equipment or vehicle power is interrupted. This can be valuable for equipment-security and fleet-monitoring applications where maintaining limited device functionality following primary-power loss is important.

CalAmp specifies a battery charging-temperature range of 0°C to +40°C and an operating range of 0°C to +50°C while running from the internal battery. (CalAmp)

The use of NiMH battery technology is also noteworthy for applications involving demanding operating environments where the characteristics of the backup battery system are an important design consideration.

Low-Power Operation

Despite its advanced cellular, GNSS, CAN, Bluetooth and serial capabilities, the HMU-3640LB provides low-power operating modes intended to reduce its electrical impact on the host vehicle or equipment.

CalAmp specifies typical consumption of:

• 300 µA at 12 V in deep sleep

• 20 mA at 12 V during radio-active sleep

• 100 mA at 12 V with GPS tracking and cellular communications enabled (CalAmp)

Deep-sleep operation is particularly valuable for equipment that may remain parked or inactive for extended periods because it helps reduce the telematics gateway's impact on the host battery.

12/24-Volt Equipment Electrical Architecture

The HMU-3640LB is designed for both 12 V and 24 VDC vehicle electrical systems.

CalAmp specifies:

• 9–32 VDC during startup and normal operation

• 7–32 VDC for momentary operation (CalAmp)

This wide electrical range makes the gateway suitable for many types of commercial vehicles, heavy equipment and industrial machinery.

Rugged 12-Pin Mini-Deutsch Connector

The HMU-3640LB uses a 12-pin Mini-Deutsch connector for its primary electrical interface. (CalAmp)

Deutsch-style connectors are particularly appropriate for demanding commercial and industrial applications where connection reliability and environmental durability are important.

CalAmp identifies the CBL00018 — Deutsch 12-Wire Flying Leads Cable as an accessory for the HMU-3640LB. (CalAmp)

This wiring architecture gives installers access to the gateway's power, I/O, serial and vehicle-interface functionality while maintaining the rugged characteristics expected from an industrial telematics installation.

Rugged IP66 & IP67 Environmental Protection

One of the defining characteristics of the HMU-3640LB is its rugged IP66 and IP67 sealed enclosure. (CalAmp)

The gateway is specifically designed for harsh operating conditions encountered in industries such as construction, agriculture and mining. CalAmp specifies an operating-temperature range of -30°C to +75°C while connected to primary power and humidity tolerance of 95% RH at 50°C, non-condensing. (CalAmp)

Shock and vibration performance references U.S. MIL-STD 202G and 810F and SAE J1455, while ESD performance is specified to IEC 61000-4-2 with a 4 kV test level. (CalAmp)

This environmental design makes the HMU-3640LB significantly more appropriate for exposed or demanding equipment installations than conventional interior-only GPS tracking hardware.

Integrated Status Diagnostics

The HMU-3640LB incorporates four status LEDs providing visual diagnostic information for:

• GNSS/GPS

• Cellular

• Wi-Fi/Bluetooth

• CAN (CalAmp)

These indicators can assist installers and service technicians during installation, commissioning and troubleshooting by providing immediate visibility into key communication interfaces.

CalAmp Device Management, Telematics Cloud & iOn Integration

The HMU-3640LB can operate as part of CalAmp's broader connected-asset software ecosystem.

CalAmp Device Management enables organizations to remotely manage, configure and deploy OTA updates to connected assets at scale. (CalAmp)

CalAmp Telematics Cloud provides the ability to stream and integrate telematics information across external systems and applications using flexible APIs. (CalAmp)

CalAmp iOn provides cloud-based capabilities for obtaining real-time insights into connected assets with the objective of improving operational visibility, safety and efficiency. CalAmp notes that applicable software and cloud capabilities require the appropriate subscription service. (CalAmp)

Regulatory & Industry Certifications

The HMU-3640LB carries professional telematics and communications certifications including:

• FCC

• CE

• IC

• PTCRB

• RoHS (CalAmp)

Combined with the device's extensive global LTE band coverage, these certifications support deployment across a broad range of commercial and industrial telematics markets.

Key Technical Features

• Global LTE Cat-1 cellular connectivity

• 3G and 2G network fallback

• Extensive LTE-FDD and LTE-TDD band support

• WCDMA and GSM/EDGE support

• SMS, UDP, TCP and TLS communications

• 55-channel hybrid GPS/GLONASS/SBAS GNSS engine

• WAAS, EGNOS and MSAS augmentation

• Approximately 2.0 m CEP open-sky location accuracy under CalAmp's specified conditions

• -167 dBm GNSS tracking sensitivity

• -156 dBm hot-start acquisition sensitivity

• -148 dBm cold-start acquisition sensitivity

• Up to 4 Hz location updates

• GNSS anti-jamming support

• Assisted GPS capability

• Dual CAN interfaces

• SAE J1939 heavy-duty vehicle support

• RS-232 serial communications

• RS-485 serial communications

• Modbus protocol support

• Bluetooth Low Energy 5.2

• One fixed-bias ignition input

• One selectable high/low-bias digital input, 0–32 VDC

• One 150 mA open-collector digital output

• One external ADC analog input, 0–32 VDC

• Built-in accelerometer and gyroscope

• PEG™ no-code edge scripting

• EdgeApp32 custom edge-application support

• 21 rectangle or radial geofence zones

• Up to 5,400 radial zones or vertices

• Up to 20,000 buffered messages

• 500 mAh NiMH internal backup battery

• Typical deep-sleep consumption of approximately 300 µA at 12 V

• 12/24 VDC electrical-system compatibility

• 9–32 VDC startup and normal operating range

• 7–32 VDC momentary operating range

• Rugged 12-pin Mini-Deutsch connector

• Internal 2FF SIM

• Four GPS/cellular/Wi-Fi-Bluetooth/CAN status LEDs

• IP66 and IP67 sealed enclosure

• Operating temperature from -30°C to +75°C on primary power

• 95% RH at 50°C non-condensing

• MIL-STD 202G and 810F referenced shock/vibration performance

• SAE J1455 referenced shock/vibration performance

• FCC, CE, IC, PTCRB and RoHS certifications

• CalAmp Device Management with OTA updates

• CalAmp Telematics Cloud API integration

• CalAmp iOn cloud-software integration (CalAmp)

Ideal Applications

The CalAmp HMU-3640LB is particularly well suited for heavy-duty fleet telematics, construction equipment, agricultural machinery, mining equipment, industrial vehicles, smart trailers, generators, powered equipment, equipment rental fleets, municipal and utility vehicles, industrial IoT, equipment utilization monitoring, preventive-maintenance data acquisition, vehicle and equipment security, and OEM telematics integration. CalAmp specifically positions the device for industrial equipment manufacturers and asset-fleet operators working in construction, agriculture, mining and other demanding environments. (CalAmp)

Its combination of global LTE Cat-1 connectivity with 3G/2G fallback, high-sensitivity GNSS, dual CAN/J1939 connectivity, RS-232/RS-485 and Modbus communications, BLE 5.2, configurable I/O, accelerometer and gyroscope sensing, PEG and EdgeApp32 edge programming, a 500 mAh NiMH backup battery, and IP66/IP67 environmental protection makes the HMU-3640LB particularly well suited to applications requiring a true rugged telematics gateway rather than a basic GPS tracking device. (CalAmp)

CalAmp HMU-3640LB official product specifications

SKU DEFINITION: HMU3640, LTE NA, AT&T, SERIAL, DUAL CAN, 500MAH BAT, LOAD DUMP