



Description
The TOPGNSS GNSS board module supports multiple satellite navigation systems such as GPS, GLONASS, Galileo, and BeiDou. It can simultaneously track satellite signals from multiple constellations and quickly and accurately determine its position even in complex environments. Compared with single - constellation modules, the reliability and accuracy of its positioning have been significantly improved.
- High - precision Positioning: By applying advanced signal processing technologies and algorithms, it can achieve centimeter - level positioning accuracy, meeting the application scenarios with extremely high requirements for positioning accuracy, such as surveying and mapping, autonomous driving, and precision agriculture.
- High Sensitivity: It has excellent weak - signal acquisition and tracking capabilities. Even in urban canyons with severe signal blockage, indoor environments, or areas covered by thick vegetation, it can effectively receive satellite signals and maintain stable positioning performance.
- Fast Positioning: The cold - start time is as short as 28 seconds, and the hot - start time only takes 1 second. It can quickly obtain positioning information, meeting the application requirements of fields with high real - time requirements, such as vehicle navigation and UAV flight control.
- Low - power Design: By adopting optimized power management strategies and low - power chips, it can effectively reduce power consumption while ensuring high performance. It is suitable for battery - powered devices and Internet of Things applications with strict power consumption requirements.
- Interface: It is equipped with a UART TTL interface, which is convenient for connection and communication with various main control chips and external devices, and is easy to integrate into different systems.
- Industrial - grade Standards: It meets industrial - grade environmental requirements for temperature, humidity, vibration, etc., has high reliability and stability, and can operate normally under extreme temperature conditions ranging from - 40°C to + 85°C. It is suitable for various harsh industrial environments and outdoor applications.
Model: GN-4021A - 9N
GNSS Chip: M9140
Operating Frequency: GNSS L1
Baud Rate: 115200
Maximum Support: 1-25Hz Output
Operating Voltage: 5 - 12V
Operating Level: TTL
Operating Level: TTL + USB
Dimensions: 40 * 21mm
Antenna Connector: IPEX MCX SMA
Default shipping quantity: 1PCS
By default, the antenna connector on the board is an IPEX connector. If you need an SMA or MCX connector, please make a note on the order. Thank you!
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Refund Policy
Return/Refund Policy
You can return/exchange our products (except software) within 14 days of purchase. Product must be in good condition (eg: not broken or scratched). Shipping charges are non-refundable. Returns/exchanges are subject to a 15% restocking fee with a minimum of $10 USD, whichever is higher.
- TOPGNSS.store does not accept returns/exchanges for software products under any circumstances.
- Items ordered in bulk (quantities of 5 or more in 1 order) are final sales and non-refundable.
- Items sold at promotional discounter prices are final and non-refundable.
- You must pay shipping for all shipments from you to TOPGNSS.store (China).
- Ship your device to the TOPGNSS.store using the carrier of your choice. Please use a method that can track the shipment. TOPGNSS.store is not responsible for shipments for which the carrier cannot provide proof of delivery.
- If the product problem is confirmed, TOPGNSS.store will pay the shipping fee (within China) for the repair/replacement product sent to you by TOPGNSS.store . If there is no problem with the product, we will charge the shipping fee to send the product back to you.
- TOPGNSS.store is not responsible for loss or damage in transit. We recommend that you purchase freight insurance for your shipment.
Return requirements:
1) Request an RMA number by sending an email to info@topgnss.com
2) Our support staff will provide you with an RMA number and instructions for returning the package. You must clearly state the RMA number on the outside of the package. Any returns that do not have an RMA number on the package will be returned to the sender.
3) Returned product must contain all original components, literature and packaging and be in the same saleable condition as received.
Return refunds will cover the product amount and any sales tax charged minus a 15% restocking fee. Any shipping charges are non-refundable. Returns that do not meet the above requirements may be subject to a restocking fee equal to 25% of the price paid. Damaged items, cosmetic or otherwise, are subject to a restocking fee (up to 100%) on a case-by-case basis. There are no restocking fees for orders cancelled prior to dispatch; if the order has already been dispatched, it is the buyer's responsibility to accept and return the order in accordance with our Returns Policy.
Shipping and handling charges may apply to orders that are rejected at the specified shipping address. A 14-day period from when the shipment is delivered, based on the delivery time scanned by UPS/China Post, the time UPS/Chiina Post delivers to your region. Returns for manufacturing defects must first be authorized; if you believe your product has a manufacturing defect or you have any questions or concerns, please contact info@topgnss.com. If an item covered by warranty is no longer repairable or replaceable, a product replacement will be issued.
Please allow up to 15 (fifteen) business days (excluding holidays and weekends) after we receive your package to process your return. This time period does not affect your 14-day money-back guarantee.
You can return/exchange our products (except software) within 14 days of purchase. Product must be in good condition (eg: not broken or scratched). Shipping charges are non-refundable. Returns/exchanges are subject to a 15% restocking fee with a minimum of $10 USD, whichever is higher.
- TOPGNSS.store does not accept returns/exchanges for software products under any circumstances.
- Items ordered in bulk (quantities of 5 or more in 1 order) are final sales and non-refundable.
- Items sold at promotional discounter prices are final and non-refundable.
- You must pay shipping for all shipments from you to TOPGNSS.store (China).
- Ship your device to the TOPGNSS.store using the carrier of your choice. Please use a method that can track the shipment. TOPGNSS.store is not responsible for shipments for which the carrier cannot provide proof of delivery.
- If the product problem is confirmed, TOPGNSS.store will pay the shipping fee (within China) for the repair/replacement product sent to you by TOPGNSS.store . If there is no problem with the product, we will charge the shipping fee to send the product back to you.
- TOPGNSS.store is not responsible for loss or damage in transit. We recommend that you purchase freight insurance for your shipment.
Return requirements:
1) Request an RMA number by sending an email to info@topgnss.com
2) Our support staff will provide you with an RMA number and instructions for returning the package. You must clearly state the RMA number on the outside of the package. Any returns that do not have an RMA number on the package will be returned to the sender.
3) Returned product must contain all original components, literature and packaging and be in the same saleable condition as received.
Return refunds will cover the product amount and any sales tax charged minus a 15% restocking fee. Any shipping charges are non-refundable. Returns that do not meet the above requirements may be subject to a restocking fee equal to 25% of the price paid. Damaged items, cosmetic or otherwise, are subject to a restocking fee (up to 100%) on a case-by-case basis. There are no restocking fees for orders cancelled prior to dispatch; if the order has already been dispatched, it is the buyer's responsibility to accept and return the order in accordance with our Returns Policy.
Shipping and handling charges may apply to orders that are rejected at the specified shipping address. A 14-day period from when the shipment is delivered, based on the delivery time scanned by UPS/China Post, the time UPS/Chiina Post delivers to your region. Returns for manufacturing defects must first be authorized; if you believe your product has a manufacturing defect or you have any questions or concerns, please contact info@topgnss.com. If an item covered by warranty is no longer repairable or replaceable, a product replacement will be issued.
Please allow up to 15 (fifteen) business days (excluding holidays and weekends) after we receive your package to process your return. This time period does not affect your 14-day money-back guarantee.