LMU-4230 supports a broad range of wireless connection options and comes equipped with either light or heavy duty vehicle interfaces. The LMU-4230's expandability and flexibility are key to lowering the cost of delivering, supporting, and growing fleet management solutions.


The LMU-4230 is designed to support enterprise customers needing a wide range of wireless connectivity, vehicle interfaces and peripheral interconnect. The LMU-4230 offers a full set of fleet features with cellular, WiFi, Bluetooth, and satellite connectivity options, plus a 3-axis accelerometer that detects and acts on hard braking, aggressive acceleration, or vehicle impacts. The LMU-4230 also features a comprehensive I/O system and expandable accessories that make it an industry leading value proposition. The serial ports supply switchable power at selectable voltages to ease the installation of peripheral data devices. The optional jPOD™ ECU (Engine Control Unit) interface reads and transmits heavy-duty engine condition and performance data such as engine temperature along with the fault codes to provide the best possible real-time picture of vehicle health.


The LMU-4230 employs CalAmp's industry leading on-board alert engine, PEG™ (Programmable Event Generator). This advanced engine monitors external conditions and supports customer-defined exception-based rules to help meet the needs of your application. PEG continuously monitors the vehicle environment and responds instantaneously to pre-defined threshold conditions related to time, date, motion, location, geo-zone, input and other event combinations. With PEG, your unique application will meet demanding customer requirements. This behavior can be programmed by CalAmp before shipment, at a customer's facility, or over-the-air once the unit has been fielded.


The LMU-4230 also leverages CalAmp's industry over-the-air device management and maintenance system, PULS™ (Programming, Updates, and Logistic System). Configuration parameters, PEG rules, and firmware can all be updated over-the-air. PULS offers out-of-the-box hands free configuration and automatic post-installation upgrades. You can also monitor unit health status across your customers’ fleets to quickly identify issues before they become expensive problems.




  • Data SupportSMS, TCP and UDP packet data
  • Location Technology 56 channel GPS (with SBAS)
  • Operating Voltage12 and 24 volt vehicle systems


  • Location TechnologyGPS; GLONASS, and QZSS capable
  • Enhancement TechnologySBAS: WAAS, EGNOS, MSAS
  • Receiver Type56 channels
  • Tracking Sensitivity-162dBm
  • Acquisition Sensitivity-148dBm
  • Location Accuracy2.0m
  • Location Update Rateup to 10 Hz
  • Anti-jamming
  • AGPS Capable


  • Data SupportSMS, GPRS, CDMA 1xRTT or HSPA packet data
  • Operating Bands (MHz)
    • GSM/GPRS:
      • 850/900/1800/1900
    • CDMA/1XRTT:
      • 850/1900
    • HSPA/UMTS:
      • 800(VI)/850(V)/900(VIII)/1700(IV)/1900(II)/2100(I)
  • Transmitter Power
    • GSM/GPRS:
      • 850/900, 32.5 dBm
      • 1800/1900, 29.3 dBm
    • CDMA/1XRTT:
      • 850, 24 dBm
      • 1900, 23 dBm
    • HSPA/UMTS:
      • All bands, 23 dBm
  • HSPA Data Rates5.6 Mbps upload/7.2 Mbps download
  • HSPA FallbackEDGE/GPRS/GSM quad band
    3GPP Release 6
  • LTE700/800/850/1700/1800/1900/2600 MHz
    (depending on configuration)
    Downlink up to 100 Mbps (peak burst rate)
    Uplink up to 50 Mbps (peak burst rate)
  • Fallback to HSPA/CDMA (depending on configuration)

Comprehensive I/O

  • Digital Ignition Inputs1 fixed bias
  • Digital Inputs7 (high/low selectable 0-30 VDC)
  • Digital Outputs5 (open collector relay 150mA)
  • Current Limited Outputs2 (20mA)
  • A/D Inputs4 (0 - 30VDC, +/-0.1V accuracy)
  • 1-Wire® Interface2 (Driver ID, temperature sense)
  • Status LEDsGPS and cellular


  • Temperature-30º to +75º C (connected to primary power); -40º to +85º C (storage)
  • Humidity95%RH @ 50º C non-condensing
  • Shock and VibrationU.S. Military Standards 202G and 810F, SAE J1455
  • EMC/EMISAE J1113


  • Operating Voltage9-30 VDC (start-up, operating)
    7-32 VDC (momentary)
  • Power Consumption4 mA @ 12 V (deep sleep)
    10 mA @ 12 V (sleep on network with SMS)
    20 mA @ 12 V (sleep on network with GPRS)
    70 mA @ 12 V (active tracking)
  • Back-up Battery(Optional) Lithium-Ion 200mAh or 1000mAh


  • Dimensions4.3 x 3.2 x 0.86” , (110 x 81 x 22mm)
  • Weight4 oz, (113 g)

Connectors, SIM Access

  • External CellularSMC
  • External GPSSMA (with tamper monitoring, 3.0v)
  • Wi-Fi OptionRP-SMA
  • Vehicle Bus OptionDB-15
  • 4-Pin MolexPower, ground, ignition, A/D
  • Two 5-Pin MolexSwitched power serial
  • 22-Pin MolexI/O connection
  • RS-232DB-9
  • SIM AccessInternal

Additional Configurations

  • Bluetooth 4.0 Dual ModeClassic, Bluetooth Low Energy
  • Wi-Fi a/b/g/i client mode
  • jPOD™ TruckJ1708, J1939
  • vPOD Light DutyJ1850 PWM, J1850 VPW, ISO 9141-2, KWP 2000, ISO-15765


  • Fully certified FCC, CE, IC, PTCRB, Applicable Carriers


  • Tie-wrap, adhesive, or Velcro
    Screw mounting bracket



Key Features

GSM/GPRS, CDMA 1xRTT, HSPA or LTE configurations

Optional Wi-Fi or Bluetooth connectivity

Optional heavy duty or light duty vehicle ECU interfaces

Switched power serial ports

Comprehensive I/O system with 8 inputs, 7 outputs, 4 A/D inputs, and 2 1-Wire™ interfaces

Internal or external antenna configurations

Built-in 3-axis accelerometer for driver behavior, Motion sensing, hard braking, impact detection

Dual reporting 20,000 buffered message log

32 built-in geo-fences, plus any combination of circle or polygon zones, up to 5290 points

Optional 1000mAh backup battery

Automatic, over-the-air configuration and firmware download

Android™, Magellan®, Garmin®, TomTom®, MDT and other advanced peripherals support

Low power sleep modes

Programming and Management Tools

Learn more about PEG and PULS, complimentary tools available to solution providers and channel partners for managing CalAmp devices.