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:

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

Size72x104.1x26.8 mm (2.83x4.1x1.06 in)
Internal antenna (GNSS)Yes
Internal antenna (Connection)Yes

Connectivity information

Cellular network typeGSM Quad Band
Cellular network generation3G, 2G

Location information

GNSS signal levelYes


Remote outputs controlYes
Hardware keyYes
Built-in batteryYes
Battery capacity800 mAh


Discrete inputs5
Number of outputs4
Analog sensorYes
RS485 interfaceYes
1-Wire interfaceYes
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