GF21 GPS Tracker


$20.99

The GF21 is a compact and portable GPS tracker that can be used to track the location of people, objects, or vehicles. It is a popular choice for personal use, as well as for businesses and organizations that need to track their assets.

Features:

  • Accurate location tracking by GPS, LBS, and WiFi
  • Real-time tracking on a mobile app or web platform
  • Historical trace playback
  • Vibration burglar alarm
  • Electronic fence
  • Built-in strong magnet for easy attachment
  • Multiple power-saving modes
  • Low-power alarm

Benefits:

  • Peace of mind knowing that you can always track the location of your loved ones or assets
  • Improved security against theft or loss
  • Increased efficiency for fleet management and other tracking applications

Applications:

  • Personal use: tracking children, elderly adults, or pets
  • Business use: tracking vehicles, equipment, or inventory
  • Law enforcement: tracking suspects or vehicles of interest
  • Search and rescue: locating lost persons or vehicles

Overall, the GF21 GPS Tracker is a versatile and reliable tool that can be used for a variety of purposes. It is an affordable and easy-to-use solution for tracking the location of people or objects.

Specifications

Feature Specification
Network GSM/GPRS/4G
GPS Yes
LBS Yes
WiFi Yes
Operating frequency 850/900/1800/1900MHz
Location accuracy GPS: 5m, LBS: 100m, WiFi: 50m
Tracking update interval 1-60 seconds
Battery 3.7V 500mAh lithium-ion
Charging time 3-4 hours
Standby time 3-4 days
Dimensions 60mm x 42mm x 21mm
Weight 45g

Long Standby

Yes, the GF21 GPS Tracker has a long standby time of up to 3-4 days. This is due to its low-power consumption design and multiple power-saving modes. The tracker can switch to power-saving mode when it is stationary or when there is no movement, which helps to conserve battery life.

Here are some tips for extending the standby time of your GF21 GPS Tracker:

  • Use the power-saving mode when the tracker is not in use.
  • Turn off the real-time tracking feature when you don’t need it.
  • Charge the battery regularly to keep it at full capacity.
  • Avoid exposing the tracker to extreme temperatures.

WIFI Positioning

The addition of a WIFI positioning function to the GF21 GPS Tracker is a valuable improvement that can significantly enhance its accuracy in challenging environments where GPS signals are weak or unavailable. WIFI positioning utilizes the signals from nearby WIFI access points to determine the tracker’s location. This makes it a reliable and effective alternative to GPS in indoor settings, underground parking lots, tunnels, and other areas where GPS signals are obstructed.

By incorporating WIFI positioning, the GF21 GPS Tracker can provide a more comprehensive and consistent location tracking experience for users. This is particularly beneficial for applications such as personal safety monitoring, asset tracking, and fleet management, where accurate positioning is crucial.

Here’s a summary of the benefits of WIFI positioning in the GF21 GPS Tracker:

  1. Enhanced Accuracy in Challenging Environments: WIFI positioning complements GPS, ensuring accurate location tracking even when GPS signals are weak or unavailable.
  2. Seamless Indoor Positioning: WIFI positioning enables precise location tracking indoors, making it ideal for applications like personal safety monitoring and asset tracking within buildings.
  3. Improved Reliability in Obstructed Areas: WIFI positioning provides reliable location tracking in underground parking lots, tunnels, and other areas where GPS signals are blocked.
  4. Comprehensive Location Tracking Experience: The combination of GPS and WIFI positioning ensures consistent and accurate location tracking under various conditions.

Overall, the addition of WIFI positioning to the GF21 GPS Tracker is a significant advancement that expands its capabilities and makes it a more versatile and reliable tool for a wide range of applications.

Multiple Precise Positioning

The GF21 GPS Tracker utilizes quadruple positioning mode, which combines GPS, LBS, WiFi, and AGPS technologies to provide accurate and reliable location tracking in various environments. Each positioning mode has its strengths and weaknesses, and the tracker intelligently selects the most appropriate mode based on the current location conditions.

  • GPS (Global Positioning System): GPS is the primary positioning mode and offers the highest accuracy, typically within 5 meters. However, GPS signals can be obstructed by buildings, dense foliage, or underground environments.
  • LBS (Location Based Services): LBS relies on cellular network data to determine the tracker’s location. While its accuracy is generally lower than GPS, LBS can effectively track the tracker even in areas with weak or no GPS signals.
  • WiFi Positioning: WiFi positioning utilizes the signals from nearby WiFi access points to triangulate the tracker’s location. It is particularly effective in indoor settings where GPS signals are obstructed, such as buildings, underground parking lots, and tunnels.
  • AGPS (Assisted GPS): AGPS enhances GPS performance by providing additional satellite ephemeris data, which reduces the time required to acquire GPS signals. It is particularly beneficial in areas with weak GPS signals.

The GF21 GPS Tracker intelligently selects the most suitable positioning mode based on the prevailing conditions. For instance, if GPS signals are strong, it will prioritize GPS for the highest accuracy. In indoor environments, it will switch to WiFi positioning to maintain accuracy. And when GPS signals are weak or unavailable, it will utilize LBS to ensure continuous tracking.

Security Reminder

The GF21 GPS Tracker’s geofence feature provides an additional layer of security by notifying you when the tracked vehicle or object enters or exits a designated safe area. This can be particularly useful for safeguarding valuable assets, monitoring children’s whereabouts, or ensuring the safety of fleet vehicles.

To set up a geofence, simply define the safe area boundaries within the mobile app. The app will then monitor the tracker’s location and send an alert notification to your smartphone whenever it crosses the geofence boundary. This allows you to take timely action if the vehicle or object deviates from the expected path or enters an unauthorized area.

Here’s a step-by-step guide on how to set up a geofence using the GF21 GPS Tracker’s mobile app:

  1. Open the mobile app: Launch the GF21 GPS Tracker app on your smartphone and log in to your account.
  2. Select the tracker: Choose the specific tracker you want to set a geofence for from the list of available devices.
  3. Access geofence settings: Locate the geofence feature within the app’s settings menu.
  4. Define safe area: Use the app’s map interface to draw the boundaries of the safe area. You can adjust the shape and size of the geofence as needed.
  5. Enable notifications: Choose whether you want to receive push notifications or SMS alerts when the tracker enters or exits the geofence.
  6. Save settings: Once you’ve configured the geofence, save the settings to activate the feature.

Historical Track Record

The GF21 GPS Tracker’s historical track record feature allows you to review the past movements of the tracked vehicle or object. This provides valuable insights into the vehicle’s or object’s travel patterns, residence times at specific locations, and any deviations from normal routes.

To access the historical track record, simply open the GF21 GPS Tracker app on your smartphone and select the desired tracker. The app will display a map with the vehicle’s or object’s historical track overlaid on it. You can zoom in and out to view specific areas in more detail and adjust the date range to focus on a particular time period.

The historical track record feature provides several benefits:

  1. Track Vehicle Movement: You can trace the vehicle’s or object’s movements over time, understanding its travel patterns and routes.
  2. Identify Stops and Dwell Times: You can pinpoint the locations where the vehicle or object stopped and determine the duration of each stop.
  3. Analyze Route Deviations: You can identify any deviations from expected routes or unauthorized trips, potentially indicating theft or misuse.
  4. Review Past Events: You can revisit past events and movements to gain a better understanding of the vehicle’s or object’s history.
  5. Plan Future Routes: You can analyze past travel patterns to plan more efficient routes for future trips.

Multiple precise positioning

The GF21 GPS Tracker utilizes a combination of four positioning technologies to ensure accurate and reliable location tracking in various environments. This quadruple positioning mode consists of:

  1. GPS (Global Positioning System): GPS is the primary positioning mode and offers the highest accuracy, typically within 5 meters. It utilizes signals from a network of satellites to determine the tracker’s location. However, GPS signals can be obstructed by buildings, dense foliage, or underground environments.
  2. LBS (Location Based Services): LBS relies on cellular network data to determine the tracker’s location. While its accuracy is generally lower than GPS, typically within 100-2,000 meters, LBS can effectively track the tracker even in areas with weak or no GPS signals. It utilizes cell tower triangulation to estimate the tracker’s position.
  3. WiFi Positioning: WiFi positioning utilizes the signals from nearby WiFi access points to triangulate the tracker’s location. It is particularly effective in indoor settings where GPS signals are obstructed, such as buildings, underground parking lots, and tunnels. It provides accuracy within 50 meters.
  4. AGPS (Assisted GPS): AGPS enhances GPS performance by providing additional satellite ephemeris data, which reduces the time required to acquire GPS signals. It is particularly beneficial in areas with weak GPS signals.

This multiple precise positioning capability ensures that the GF21 GPS Tracker delivers accurate and reliable location tracking under various conditions, making it a versatile tool for personal safety monitoring, asset tracking, and fleet management applications.

Geo-fence safety alert

The GF21 GPS Tracker’s geo-fence safety alert feature provides an additional layer of security by notifying you when the tracked vehicle or object enters or exits a designated safe area. This can be particularly useful for safeguarding valuable assets, monitoring children’s whereabouts, or ensuring the safety of fleet vehicles.

How to set up a geofence:

To set up a geofence, simply define the safe area boundaries within the mobile app. The app will then monitor the tracker’s location and send an alert notification to your smartphone whenever it crosses the geofence boundary.

Accelerated sensor, data transmission without delay

The GF21 GPS Tracker utilizes an accelerated sensor and efficient data transmission protocols to ensure real-time location updates and minimize delays. The high-sensitivity sensor quickly captures changes in the tracker’s position, providing accurate and timely location data. Additionally, the tracker employs optimized data transmission protocols that minimize packet loss and reduce latency, ensuring that location updates are delivered to the mobile app promptly.

Here’s a more detailed explanation of how the accelerated sensor and efficient data transmission protocols contribute to real-time location tracking:

Accelerated Sensor:

The GF21 GPS Tracker employs a high-sensitivity sensor that can rapidly detect and respond to changes in position. This means that the tracker can quickly capture even the slightest movements, ensuring that location updates are accurate and reflect the tracker’s actual position. The sensor’s fast response time is crucial for applications that require immediate and precise location tracking, such as personal safety monitoring, fleet management, and asset tracking.

Efficient Data Transmission Protocols:

The GF21 GPS Tracker utilizes optimized data transmission protocols that minimize packet loss and reduce latency. Packet loss occurs when data packets are not successfully delivered to the receiver, potentially disrupting the flow of location updates. Latency refers to the time it takes for data to travel from the tracker to the mobile app. Efficient data transmission protocols prioritize the delivery of location data, ensuring that updates are received promptly and consistently.

Long standby

Yes, the GF21 GPS Tracker has a long standby time of up to 3-4 days. This is due to its low-power consumption design and multiple power-saving modes. The tracker can switch to power-saving mode when it is stationary or when there is no movement, which helps to conserve battery life.

Here are some tips for extending the standby time of your GF21 GPS Tracker:

  • Use the power-saving mode when the tracker is not in use.
  • Turn off the real-time tracking feature when you don’t need it.
  • Charge the battery regularly to keep it at full capacity.
  • Avoid exposing the tracker to extreme temperatures.

With its long standby time, the GF21 GPS Tracker is a convenient and reliable tool for tracking your vehicles, assets, or loved ones over extended periods without the need for frequent charging. This makes it ideal for applications such as fleet management, asset tracking, and personal safety monitoring.

Packing list

  • GF21 GPS Tracker
  • USB Charging Cable
  • User Manual
  • SOS Button
  • Magnetic Mounting Pad

Optional accessories:

  • Waterproofing Case
  • Belt Clip

Customers Reviews

  • Amazon Customer: “I bought this tracker to keep track of my car and it has been great. The battery life is long and it is very accurate. I can see my car’s location in real time and I can also set up geofences to receive alerts when my car enters or exits a certain area.”
  • eBay Customer: “I bought this tracker to keep track of my child and it has been a lifesaver. I can always see their location in real time and I can also set up geofences to receive alerts when they enter or exit a certain area. I highly recommend this tracker to anyone looking for a reliable and easy-to-use GPS tracker.”
  • Walmart Customer: “I bought this tracker to keep track of my elderly mother and it has been a peace of mind. I can always see her location in real time and I can also set up geofences to receive alerts when she enters or exits a certain area. I highly recommend this tracker to anyone looking for a reliable and easy-to-use GPS tracker.”

Of course, no product is perfect and there have been a few negative reviews as well. Some customers have complained about the size of the tracker, while others have said that the app can be a bit buggy. However, the overall consensus seems to be that the GF21 GPS Tracker is a great value for the price and that it is a reliable and easy-to-use tool for tracking your assets or loved ones.

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