M38 Voice-Enabled 4G 3G 2G GPS Tracker for Vehicle Asset Person Locating Tracking with SOS

Brand Name:YOUWEI
Certification:CE FCC RoHS
Model Number:M38
Minimum Order Quantity:10
Delivery Time:5-7 business days
Payment Terms:T/T, Western Union, MoneyGram, D/A, L/C, Paypal
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Location: Shenzhen Guangdong China
Address: 501, Building A, No. 32, Huimin 1st Road, Guanlan Street, Longhua District, Shenzhen, China, Shenzhen, Guangdong, China
Supplier`s last login times: within 7 hours
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Product Details

1. Product Overview

The M38 GPS Tracker is an ultra-compact, high-performance tracking device designed for real-time positioning and monitoring. With triple-mode satellite support (GPS+Beidou+GLONASS) and 4G Cat1 connectivity, it ensures accurate and reliable tracking for vehicles, assets, or personal use. Its plug-and-play design, built-in backup battery, and magnetic charging make it easy to install and maintain.

Since it has voice functionality, this product is only sold in countries where it is legally permitted. It does not support unauthorized surveillance or recording, and all voice features are strictly designed for legitimate purposes such as emergency communications and authorized location tracking.

2. Key Features

Triple Positioning: GPS + Beidou + GLONASS for high accuracy.

Real-Time Tracking: Live location updates with trajectory playback.

Electronic Fence Alarm: Alerts when the device moves beyond a predefined area.

Easy Installation: No power button; auto-activates when powered.

Built-in Backup Battery: Ensures continuous operation during power interruptions.

4G Cat1 Module: Stable connectivity with low power consumption.

Remote OTA Upgrade: Firmware updates without physical access.


3. Product Parameters

ParameterDetails
Main Chip4G Cat1 Module
Frequency Band2320-2370MHz / 2575-2635MHz
SIM CardChina Mobile 4G patch card
Positioning Accuracy<5m
First Positioning TimeAvg. 32s (cold start)
Transmission ProtocolMQTT
Output Power28.0 ±2dBm (both frequency bands)
Receiver Sensitivity-107dBm
SensitivityCold Start -145dBm
Hot Start -156dBm
Warm Start -145dBm
Navigation -160dBm
Tracking -162dBm
Built-in Battery5000mAH (optional)
Operating Temperature-20°C to +60°C

4. Core Functions

FunctionDescription
Scheduled TrackingReports latitude/longitude at set intervals.
Electronic FenceTriggers alarms when the device exits a predefined area.
Historical TrajectoryStores and replays 90 days of travel data (speed, direction, stops, etc.).
Pedometer ModeOptional step-counting feature (on/off configurable).
Power AlarmSends alerts when main power is disconnected.
Data ReportingReal-time GPS updates with customizable reporting (4x/day default).

5. What is 4G Cat1?

4G Cat1 (short for 4G Category 1) is a classification standard for terminal devices in 4G LTE networks, designed as a low-power, low-cost, medium-to-low-speed communication solution for the Internet of Things (IoT). Below is a detailed breakdown:

(1). Basic Definition

4G Cat1 is one of the 4G LTE terminal categories defined by 3GPP (the international telecom standards body), optimized for IoT devices. It offers moderate upload/download speeds while meeting most IoT application requirements.

Key Features:

  • Speed: Downlink 10Mbps / Uplink 5Mbps (theoretical).
  • Power Efficiency: Lower consumption than traditional 4G Cat4, ideal for battery-powered devices (e.g., our GPS tracker).
  • Cost: Modules are inexpensive with simple hardware design.

(2). Comparison with Other 4G Categories

CategoryDownlink SpeedUplink SpeedUse Case
4G Cat110Mbps5MbpsIoT (GPS trackers, shared devices)
4G Cat4150Mbps50MbpsSmartphones, HD video streaming
4G CatM11Mbps1MbpsUltra-low-power IoT (e.g., smart meters)

(3). Why Youwei GPS Tracker Uses 4G Cat1

  • Battery Savings: Fits long-term standby tracking.
  • Adequate Performance: GPS data requires minimal bandwidth (no need for high-speed video streaming).
  • Wide Coverage: Compatible with existing 4G base stations, no extra infrastructure needed.
China M38 Voice-Enabled 4G 3G 2G GPS Tracker for Vehicle Asset Person Locating Tracking with SOS supplier

M38 Voice-Enabled 4G 3G 2G GPS Tracker for Vehicle Asset Person Locating Tracking with SOS

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