CAREU U1 Plus is a cost-effective and easy-to-install GPS tracking device. It features RS232 interface and 1-Wire interface temperature and i-Button driver ID function. It is an ideal solution for everyday fleet tracking management.

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Packaging content:

  • U1 Plus tracking device
  • User manual


  • Cost effective and easy installation
  • Two-ways voice communication*
  • Data communications by UMTS/HSPA/GPRS/EDGE, SMS, FTP, USSD
  • Support GPS/ Glonass*/ BDS*/ Galileo* Satellite System
  • Built-in 6-axis accelerometer
  • Support harsh acceleration/ harsh braking/Impact detection/ harsh cornering/ Flip over detection
  • Support 1-Wire® interface temperature function and i-Button driver ID
  • RS232 interface for rich accessories supporting, Fuel level sensor, RFID reader, Barcode, and so on.
  • Support Garmin FMI 2.0 operation
  • Geofence report in circular and polygonal types
  • Remote configuration
  • Configurable real-time tracking
  • Intelligent power management
  • GPS Odometer data reading and flexible user-defined reports
  • FOTA firmware via FTP
  • Power low/lost alarm
  • GSM jamming detection
  • GPS antenna tamper detect alarm
  • Maximum 100,000 data logs

(*) Optional


  • Fleet tracking
  • Vehicle security/rescue/anti-hijack
  • Mobile asset tracking
  • Fleet management
  • Location based service


Communication Specification:

  • Frequency 2G/GSM:Quad band, 850/900/1800/1900 MHz 3G/ UMTS/HSPA:850/900/1900/2100 MHz
  • Data Protocol:TCP, UDP

GNSS Performance:

  • Datum:WGS-84
  • Receiver type:72 channels ‧Sensitivity:-160 dBm; 26s

Power Consumption:

  • 49mA@12V DC (Operating Mode)
  • 10mA@12V DC (Standby Mode)
  • 6mA@12V DC (Sleep Mode)

Operating Temperature: -20℃~+70℃ (-4℉~158℉)

Serial Ports: 3 x RS-232 Port (Configurable baud rate), 1xRS-485

Input Ports: 

  • 1 x ACC/Ignition Input
  • 4 x Digital Inputs (2 x Positive trigger & 2 x Negative triggers)
  • 2 x Analog Input (12-bit resolution)
  • 1 x 1-Wire® Input

Output Ports: 4 x Outputs (Max. sink current 300mA)

Server connection

EU (
US (
Server port46986
Auto registrationYes

General information

Weight80 g (2.82 oz.)

Location information

GNSS signal levelYes


Remote outputs controlYes
Hardware keyYes


Discrete inputs5
Number of outputs4
Analog sensorYes
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