GPT48-X — Nordic nRF9160 Inside + Real-Time Wake (SMS/eDRX)

Enterprise-Grade Asset Intelligence Platform

The GPT48-X represents the pinnacle of industrial IoT tracking technology, combining ultra-low power consumption with global connectivity to deliver unprecedented operational visibility. Engineered for mission-critical deployments where reliability and longevity are paramount.

Multi-Year Battery Endurance

8000mAh Li-MnO₂ primary cell with <1% annual self-discharge. Achieves up to 4–5 years of operation with daily reporting through advanced PSM/eDRX power management and intelligent motion-based wake algorithms.

Global IoT Connectivity

Dual-mode LTE Cat-M1 and NB-IoT support across 17 frequency bands. Operates in 180+ countries with automatic network selection and seamless roaming capabilities.

Multi-GNSS Precision

Concurrent GPS, GLONASS, and BeiDou reception delivers ~5–15 m accuracy in open sky. Enhanced urban canyon performance with GPS sensitivity down to -155 dBm plus LBS fallback.

Industrial Durability

IP65-rated enclosure operates from -20°C to +65°C. Meets IEC 60068-2-27 shock and IEC 60068-2-6 vibration standards with integrated neodymium mounting.

Smart Power Management

Deep sleep current <10μA with motion-activated wake. Configurable reporting intervals and emergency mode activation for critical tracking scenarios.

Real-time Alerts

Instant notifications for vibration, collision, tamper, and geo-fence events. Multi-channel alerting via platform, SMS, and webhook integration.

Technical Specifications

Comprehensive technical parameters for system architects and integration engineers. All specifications verified through rigorous testing in accordance with international standards.

Physical Specifications

Dimensions	101 × 60 × 25.5 mm
Weight	150 g (including battery)
Enclosure Material	ABS+PC Composite
Color	Industrial Black
Mounting	Integrated magnets for quick installation; optional screw mounting

Sensors & Interface

Motion Sensor	3-Axis Accelerometer (±16g range)
Tamper Detection	Drop/Removal Alert
LED Indicators	Blue (GNSS), Red (Network)
SIM Type	Nano-SIM (4FF)
Configuration Port	USB Type-C (Factory Use)

Cellular Connectivity

Technology	LTE Cat-M1, NB-IoT
Cellular Module	Nordic nRF9160 (LTE‑M / NB‑IoT)
Frequency Bands	B1/2/3/4/5/8/12/13/14/17/18/19/20/25/26/28/66
Power Saving	PSM, eDRX Support
Data Rate	375kbps DL / 375kbps UL
Antenna Type	Internal Ceramic
Real-Time Wake	SMS (eDRX) & Motion-triggered

Protocol Support

Data Protocol	EELINK 2.0
Transport Layer	TCP/UDP, SMS
Platform Security	TLS 1.2 encrypted transport via cloud platform
OTA Updates	FOTA Support
Command Interface	SMS, Platform API

GNSS Performance

Constellations	GPS/GLONASS/BeiDou multi-constellation
Accuracy	~5–15 m (open-sky)
TTFF	Hot 5 s / Warm 10 s / Cold 32 s
GPS Sensitivity	-155 dBm
Acquisition Sensitivity	-148 dBm

Fallback Positioning

LBS Support	Cell Tower Triangulation
LBS Accuracy	100-200m (Urban)
AGPS	Network Assisted

Battery Specifications

Type	Li-MnO₂ Primary Cell
Capacity	8000mAh @ 3.0V
Energy Density	24Wh
Self-Discharge	<1% per year
Replacement	Non-replaceable

Power Consumption

Deep Sleep	<10μA
Standby (PSM)	15μA
GNSS Active	25mA
LTE Transmit	200mA peak
Battery Life	Up to 4–5 years (1 report/day; depends on network & configuration)

Operating Conditions

Operating Temperature	-20°C to +65°C
Storage Temperature	-40°C to +85°C
Humidity	20% to 90% RH (non-condensing)
Protection Rating	IP65
Shock Resistance	IEC 60068-2-27
Vibration Resistance	IEC 60068-2-6

Regulatory Compliance

Certifications

FCC, CE (RED), PTCRB

Safety & Environmental

UN38.3, RoHS, REACH, WEEE

Product Comparison

Download Full Comparison

Feature	GPT48-X	GPT50	GPT12-X	GPT29	TPT02
Battery Life	Up to 4–5 years (1 report/day; depends on network & configuration)	10 Years	3 Years	Continuous (solar assisted)	Up to 2 Years
Battery Capacity	8000mAh	24000mAh	6000mAh	5200mAh + solar panel	1900mAh replaceable
Network	LTE-M/NB-IoT	LTE Cat-1/2G	LTE-M/NB-IoT with 2G fallback	LTE Cat-1/NB-IoT + solar monitoring	Bluetooth LE / USB export
Size (mm)	101×60×25.5	130×103×30	86×54×21	120×72×26	86×54×17
Weight	150 g (including battery)	410g	115g	180g	90g
Temperature Sensor	No	Yes	No	Optional	High accuracy ±0.5°C
Light Sensor	No	Yes	No	No	No
IP Rating	IP65	IP67	IP67	IP67	IP65
GNSS Systems	GPS/GLONASS/BeiDou multi-constellation	GPS/GLONASS/BeiDou/Galileo	GPS/BeiDou	GPS/BeiDou	Not Applicable

Intelligent Operating Modes

Flexible tracking modes optimize battery life while meeting diverse operational requirements. Switch between modes remotely via SMS or platform commands.

Recommended

Long Standby Mode

Ultra-low-power profile for dormant or slow-moving assets. Ideal for containers, trailers, and staged equipment.

Default 1 report/day; interval can be configured (e.g., 8/12/24 hours).
PSM/eDRX deep sleep with SMS/platform remote wake-up.
Motion/tamper alarms can break sleep to report immediately.
Typical battery life: ~4–5 years at 1/day (depends on firmware/network).
(Optional) Light sensor for light-exposure/door-open events (variant dependent).

Trip Mode

Energy-efficient trip logging. The device records departure and arrival without continuous reporting.

On movement detected, wake and log departure.
After ~4 minutes of stillness, log arrival and return to sleep.
Ideal for start/stop proof, geofence in/out, and POD workflows.
(Configurable) Report content can include time, GNSS/Wi-Fi location, and reason.

Activity Mode

Continuous tracking while assets are moving; automatically sleeps when stationary.

3-axis accelerometer triggers wake on movement (sensitivity configurable).
While in motion, send updates at a configured cadence.
After ~4 minutes of stillness, automatically return to sleep.
False-alarm filtering and dwell-time thresholds are configurable.
(Optional) Light-exposure events can be recorded if light sensor variant is present.

Truck yard with red tracking marker for high-frequency real-time tracking, representing Emergency Mode.

Emergency / Real-time Mode

High-frequency reporting for theft recovery and mission-critical events.

Switch via platform command or SMS; may also be entered by internal alarms (e.g., motion/tamper).
High-frequency updates with configurable interval and duration.
Auto-revert to the previous mode after the emergency window.
Works with all onboard sensors and GNSS/Wi-Fi positioning.
Designed for rapid recovery, exception handling, and investigations.

Calculate Your ROI

Estimate your return on investment with GPT48-X deployment

Number of Assets to Track

Asset Type

Average Asset Value ($)

Current Annual Loss Rate (%)

Annual Savings

$500,000

Based on 50% theft reduction

ROI Period

4 Months

Time to positive return

5-Year Net Savings

$2.4M

Including operational efficiencies

Industry Applications

Proven deployments across diverse industries with measurable operational improvements and ROI

Maritime Shipping

Track containers across transoceanic routes with complete visibility from port to destination. Multi-year battery life covers entire lease cycles without maintenance.

40%

Demurrage Reduction

35%

Asset Utilization

Fleet & Logistics

Monitor unpowered trailers and chassis without wiring. Magnetic mounting enables quick deployment and redeployment across fleet assets.

25%

Utilization Gain

95%

Recovery Rate

Construction

Secure high-value equipment with instant alerts for unauthorized movement. Reduce theft and optimize equipment allocation across job sites.

60%

Theft Reduction

15%

Insurance Savings

Rail Transport

Track railcars across continental networks with minimal infrastructure. Optimize routing and reduce idle time with real-time visibility.

30%

Idle Reduction

22%

On-time Delivery

Supply Chain

End-to-end visibility for high-value shipments with chain-of-custody verification. Ensure compliance and reduce shrinkage across global supply chains.

100%

Visibility

45%

Loss Prevention

Industrial Assets

Monitor remote infrastructure and mobile equipment with tamper detection. Reduce maintenance costs with usage-based servicing.

20%

Cost Reduction

98%

Asset Recovery

Integration & API

Seamless integration with existing enterprise systems through comprehensive APIs and protocols

RESTful API Integration

Access device data and control functions through our comprehensive REST API.

GET /api/v2/devices/{device_id}/location
Authorization: Bearer {api_token}

Response:
{
  "device_id": "GPT48X-001234",
  "timestamp": "2024-01-15T10:30:00Z",
  "location": {
    "latitude": 37.7749,
    "longitude": -122.4194,
    "accuracy": 5,
    "altitude": 52,
    "speed": 0,
    "heading": 0
  },
  "battery": 95,
  "status": "active",
  "sensors": {
    "motion": false,
    "tamper": false
  }
}
                

EELINK Protocol 2.0

Binary protocol for efficient data transmission over cellular networks.

Protocol Format: 
Header(2) + Length(2) + IMEI(15) + Command(2) + Data(N) + CRC(2)

Example Location Packet:
78 78 25 12 0F 0A 1D 02 33 05 09 3C 57 08 CC 66 00 1B 00 00 01 CC 00 26 7B 00 14 84 0D 0A

Decoded:
- Header: 0x7878
- IMEI: 123456789012345
- Location: 37.7749, -122.4194
- Battery: 95%
- Status: 0x00 (Normal)
                

Platform Integration

Compatible with major fleet management and IoT platforms.

✓ Eelink Cloud Platform (Keelin)
✓ Traccar Server (Open Source)
✓ Gurtam Wialon
✓ Navixy
✓ Flespi
✓ ThingsBoard
✓ AWS IoT Core
✓ Azure IoT Hub
✓ Custom Enterprise Platforms via API

SMS Command Reference

Configure and control devices remotely via SMS commands.

# Location Query
WHERE#                          // Request current location
URL#                           // Get Google Maps link

# Configuration
APN,internet#                  // Set APN
SERVER,1,api.eelink.com,8001# // Set server address
TIMER,86400#                   // Set report interval (seconds)

# Mode Control
MODE,STANDBY#                  // Enter standby mode
MODE,EMERGENCY,3600#           // Emergency mode for 1 hour

# Status
STATUS#                        // Check device status
PARAM#                         // Query all parameters
VERSION#                       // Firmware version
                

Technical Resources

Comprehensive documentation and tools for successful deployment and integration

📄

Datasheet

PDF • 2.4 MB • v3.2

📘

User Manual

PDF • 8.1 MB • v3.0

🔧

API Documentation

Online • Latest

🎓

Integration Guide

PDF • 3.7 MB • v2.8

Frequently Asked Questions

The GPT48-X achieves up to 4–5 years of battery life with one position report per day in Long Standby Mode. Actual battery life depends on reporting cadence, network conditions, temperature, and use of Emergency Mode. In typical deployments with daily reporting and good network coverage, customers regularly achieve 3–5 years of operation.

The GPT48-X supports LTE-M and NB-IoT networks across 17 frequency bands, providing coverage in over 180 countries. Major supported regions include North America, Europe, Asia-Pacific, and Latin America. The device automatically selects the best available network. Check with your local carrier for specific LTE-M/NB-IoT availability.

The GPT48-X uses a non-rechargeable primary lithium battery that is not user-replaceable. This design ensures IP65 water resistance and eliminates maintenance requirements during the device's operational life. When the battery is depleted after several years, the entire unit should be replaced. Volume customers may inquire about refurbishment programs.

For enterprise customers, we offer flexible ordering options starting from pilot deployments of 10 units. Volume pricing tiers are available at 100, 500, 1000, and 5000+ units. Contact our sales team for custom pricing on large deployments and multi-year contracts.

The GPT48-X achieves ~5–15 meter accuracy in open sky conditions using multi-constellation GNSS (GPS, GLONASS, BeiDou). In challenging environments like urban canyons or under light cover, accuracy may decrease to 10-15 meters. When GNSS is unavailable, the device falls back to LBS positioning with 100-200 meter accuracy in urban areas.

The GPT48-X offers multiple integration options: REST API for custom platforms, EELINK 2.0 for direct integration, compatibility with major fleet management platforms (Wialon, Navixy, Traccar), and webhook support for event notifications. Our professional services team can assist with custom integrations for enterprise deployments.

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