Hardware & PCB design
PCB, enclosure, connectors, antenna and power design are reviewed against the installation and operating requirements.
801-3
4G Vehicle GPS Tracker with SOS Button, Microphone and Speaker
This 4G Vehicle GPS Tracker combines real-time vehicle positioning with expandable emergency communication accessories. It supports an external SOS button, microphone, speaker and buzzer, making it suitable for fleet management, taxis, school buses, logistics vehicles and commercial transportation. OEM customers can customize the hardware, firmware, communication protocol and tracking platform.
- Real-Time Vehicle Tracking: Displays the vehicle’s latest position on a web platform or mobile application
- SOS Emergency Button: Allows the driver or passenger to send an emergency alert quickly
- External Microphone: Supports in-vehicle audio monitoring when permitted by local regulations
- External Speaker: Provides voice prompts, dispatch messages or warning notifications
- External Buzzer: Generates audible alerts for emergency and operational events
- Expandable Accessory Interface: Supports different accessories according to project requirements
- Vehicle Power Connection: Operates continuously from the vehicle electrical system
- Historical Route Playback: Reviews driving routes, stops and travel records
- Electronic Geofence: Sends alerts when a vehicle enters or leaves a designated area
- Vehicle Status Monitoring: Supports configurable ignition and movement-status reporting
- Remote Configuration: Server address, APN and reporting intervals can be configured remotely
- OEM and ODM Support: Customizable logo, enclosure, accessories, firmware, protocol and platform
Reference priceUSD 29.00
Final pricing depends on configuration, quantity, taxes and shipping.
Samples and configuration
Sample availability, quantity and lead time depend on the selected model. Confirm the pilot scope before placing a production order.
OVERVIEW
Overview
The 4G Vehicle GPS Tracker with SOS Button is designed for vehicle positioning, fleet supervision and emergency communication. In addition to standard GPS tracking functions, the device provides expandable interfaces for an external SOS button, microphone, speaker and buzzer.
When an emergency occurs, the driver or passenger can press the external SOS button. The tracker immediately sends an emergency event and the vehicle’s latest location to the monitoring platform. Fleet managers can identify the corresponding vehicle and respond according to the configured emergency procedure.
The external microphone can support in-vehicle audio functions, while the external speaker can be used for voice prompts, dispatch messages and warning notifications. A buzzer can provide immediate audible alerts inside the vehicle. Audio-related functions should be used in accordance with local privacy and telecommunications regulations.
Through the PC management platform or mobile application, administrators can monitor vehicle locations, view online status, review historical routes and configure electronic geofences. Optional alerts can include overspeed, abnormal movement, power disconnection and entry into or exit from designated areas.
The tracker uses a concealed wired installation and can operate continuously from the vehicle’s electrical system. Separate external accessories allow the installation method to be adapted to taxis, school buses, trucks, service vehicles and other commercial fleets.
Shenzhen Jinshengchang Technology Co., Ltd. provides OEM and ODM development for vehicle GPS tracking projects. Customization services include enclosure design, wiring harnesses, accessory selection, firmware functions, communication protocols, API integration and white-label GPS tracking platforms.
SPECIFICATIONS
Specifications
Reference configurations are shown below. Final specifications are confirmed in the approved product specification.
| Positioning Mode | GSM, GPS, GPRS, LBS, AGPS, GLONASS |
|---|---|
| Real-time Positioning, Power Saving Mode | |
| Battery Life (Hours) | 96H |
| Application Scenarios | Motorcycles, Cars, Fleet Management, Trucks |
| Functions | Loop Recording, Fast Charging, Audio Monitoring, ACC Detection, Overspeed Alert, Track Playback, 4G SIM Card, SOS, ACC, Remote Monitoring |
| Installation Method | Portable, Windshield Mount, Dashboard Mount |
| Data Storage | SD Card, TF Card |
| Supported Platforms | PC, iOS APP, SMS Coordinates, Android APP |
| Type | Wireless |
| Viewing Angle | 360° Bird's-eye View |
| Button Battery | No |
| Warranty | 1 Year |
| Place of Origin | China |
| Model Number | G25a |
| Positioning Mode | GPS+BDS+WIFI+LBS |
| Track View | Real-time Positioning |
| Network | 4G |
| Battery | 60mAh |
| Dimensions | 80(L)*34.5(W)*14.5(H)mm |
| Tracking System | https://wechatgps.net/ |
| APP Cloud Tracking, Communication Protocol | TCP |
| Operating Temperature | -20℃~+75℃ |
| Operating Voltage | DC 9-100V |
DEPLOYMENT CHECKLIST
Deployment checklist
Select the SIM Card: Use a SIM card compatible with the local 4G network
Install the Main Unit: Place the tracker in a concealed, dry and secure position
Connect Vehicle Power: Connect the positive, negative and ACC wires correctly
Install the SOS Button: Position it where the driver can reach it quickly
Install the Microphone: Place it in a concealed position with clear audio reception
Install the Speaker: Mount it where voice prompts can be heard clearly
Install the Buzzer: Secure it inside the cabin or selected warning area
Configure the Network: Set the APN, server address and communication port
Register the Device: Add the IMEI or device ID to the tracking platform
Test Positioning: Confirm that the platform receives valid location data
Test Accessories: Verify the SOS button, microphone, speaker and buzzer separately
Configure Alerts: Set geofence, overspeed, power-disconnection and emergency rules
Complete Installation: Secure all wiring to prevent vibration or accidental disconnection
- 01
Requirements
Define the application, country, quantity, reporting interval and target battery life.
- 02
Technical design
Agree the device, network, power system, payload and platform interfaces.
- 03
Prototype validation
Test representative devices, coverage, power consumption and alarm delivery on site.
- 04
Production and rollout
Approve the specification and pilot results, then plan production, installation and support.
APPLICATIONS
Applications
CUSTOMIZATION
OEM / ODM
Firmware & protocols
Reporting intervals, event logic, payload encoding and remote configuration are defined in a versioned interface document.
Platform integration
Device registration, maps, history, alarms and customer APIs are scoped together with access permissions and data handling.
Branding & enclosures
Logo, enclosure color, labels, packaging and white-label interfaces can be assessed for the selected product and order quantity.
FAQ
Frequently asked questions
Can we evaluate samples first?+
Sample availability, quantity and lead time depend on the selected model. Confirm the pilot scope before placing a production order.
Can we use our own platform and branding?+
Logo, packaging, firmware, payloads and API integration can be assessed within the agreed OEM / ODM scope.
How are battery life and coverage confirmed?+
Reporting interval, installation, radio conditions and temperature affect results. Confirm the operating profile and validate it during the pilot.
What should we provide for a quotation?+
Share the country, device quantity, application, network, power target and platform requirements. Include drawings or interface documents when available.
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