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SMART S-4537

Advanced GPS tracking devices.
Designed for fleets, transport and industrial automation.

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4G
LTE

Common Use Cases

Device Features

RS-485 Ready

Wired. Reliable. Universal.
Supports MODBUS. Connect fuel, temperature, and more.

BLE Available

Wireless. Effortless.
Seamlessly connect any BLE sensors to your tracker.

1-Wire Sensors & Driver ID

Simple. Accurate. Connected.
Integrate temperature sensors, iButton driver ID keys, and more via 1-Wire interface.

Dual CAN Connected

Vehicle data. No delay.
Fuel, RPM, mileage — straight from the bus.

Custom Algorithm

Smart triggers. Smarter fleets.
Create your own logic inside the device.

Remote Control

Configure anytime. From anywhere.
Remote setup made easy.

Technical Specifications

Universal Inputs: 3 (with overvoltage protection up to 200 V)
Each input can operate in Digital, Impulse, Frequency, Analog, or Tachometer mode (for RPM calculation).
Digital Outputs: 2 (up to 48 V / 500 mA, open collector type)
USB Interface: Mini-USB (configuration, data, diagnostics)
1-Wire Interface: supported
RS-485 Interface: supported
CAN Interface: 2
Supported Antennas: Internal GNSS / Cellular
3-Axis Accelerometer: supported

Version: 4.0 + LE (up to 4 BLE sensors supported)
Supported Peripherals: Fuel Level, Temperature & Humidity, Axle Load, Tilt Angle
All Sensor Parameters: Battery Voltage, Signal Strength, Pressure, Illumination, etc.

Input Voltage Range: 9.5 – 47 V DC
Average Current Consumption (12 V): 75 mA
Current Consumption (12 V, GNSS & GSM off): 25 mA
Max. Current Consumption (12 V): 200 mA
Overvoltage Protection: up to 500 V
Backup Battery: Li-Po, 3.7 V, 800 mAh
EEPROM Data Retention (power-off): 5 days

Supported Systems: GPS / GLONASS / BeiDou / QZSS
Channels: 99 acquisition, 33 tracking
Sensitivity: –167 dBm (tracking), –149 dBm (cold start)
Time to First Fix: Hot start < 1 s, Warm start < 22 s, Cold start < 29 s
Accuracy (CEP, static, –130 dBm): 2.5 m (horizontal), 5 m (vertical)
Update Rate: 1 Hz

Network: GSM / GPRS / EDGE / LTE
Max Data Rate (2G): 85.6 kbps
2G Bands: Class 4 (2 W / 33 dBm ±2 dB) in GSM 850 / EGSM 900, Class 1 (1 W / 30 dBm ±2 dB) in DCS 1800 / PCS 1900
EDGE Power Class: E2 (27 dBm ±3 dB) @ EGSM 900, E1 (26 dBm +3 / –4 dB) @ DCS 1800
LTE Power Class: 3 (23 dBm ±2.7 dB)
Data Support: SMS (Text / Data)
SIM Slots: 2
SIM Type:
– Slot 1: External, mini-SIM
– Slot 2: Internal, nano-SIM

Internal Memory: 8 MB Flash
Data Storage: up to 51,500 records

Operating Temperature (with internal battery): –20 °C to +60 °C
Operating Temperature (without internal battery): –40 °C to +85 °C
Storage Temperature (with internal battery): 0 °C to +40 °C
Storage Temperature (without internal battery): –40 °C to +85 °C
Charging Temperature (internal battery): 0 °C to +50 °C
Humidity: up to 95% (at +35 °C, non-condensing)

Ingress Protection: IP54
Shock Resistance: up to 24 g
Dimensions: 102 × 57 × 22 mm (L × W × H)
Weight: 97 g
Indicators (LEDs): SYS, GSM, GNSS

Product Center

Brochures
Download product brochures with key features and benefits.
Download
Knowledge Base
Explore pages with full manuals, and guides.
Explore
PC Configurator
Configure, update, and manage devices from your desktop.
Download
Android Configurator
Set up and control devices on the go with our mobile app.
Download

FAQ

You can download the latest version of NTC Configurator here:
Get the latest version

Note: Available for Windows OS only.

  • SMS Commands
    Send direct commands to the device (e.g. APN, server, status, reboot).
    Full command list

  • Remote connection via NTC Configurator
    Connect to an online device via Internet, read/write config, update firmware.
    How it works

  • DRC Cloud Service
    Cloud-based platform for remote updates, config sync, diagnostics, and device health monitoring.
    Learn more

You can find the full list of SMS/GPRS commands here:
Full command list

If you need a complex combined command, please contact Technical Support at support@navtelecom.in

  • 2G models are budget-friendly and work where 2G networks are stable.

  • 4G models support both 4G and 2G, offering longer lifecycle and future-proof connectivity.

Need advice? Contact support@navtelecom.in

All Navtelecom devices are covered by a 3-year warranty.
The backup battery and the RTC battery (clock battery) are covered for 1 year.