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                                                                                                  1. Home
                                                                                                  2. Wireless Modules & Adaptors
                                                                                                  3. Communications & Networking Modules
                                                                                                  4. GPS Modules & Receivers
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                                                                                                  DFR1103

                                                                                                  GNSS Module, RTC Chip, I2C/UART, 2m Accuracy, 3.3 to 5 VDC, 1.57542 GHz

                                                                                                  DFROBOT DFR1103
                                                                                                  DFROBOT DFR1103
                                                                                                  DFROBOT DFR1103
                                                                                                  DFROBOT DFR1103
                                                                                                  DFROBOT DFR1103
                                                                                                  DFROBOT DFR1103
                                                                                                  Image is for illustrative purposes only. Please refer to product description.
                                                                                                  ManufacturerDFROBOT
                                                                                                  Manufacturer Part NoDFR1103
                                                                                                  Order Code4457333
                                                                                                  Technical Datasheet

                                                                                                  Data Sheet

                                                                                                  See all Technical Docs
                                                                                                  17 In Stock

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                                                                                                  QuantityPrice (ex VAT)
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                                                                                                  kr 287.19 (ex VAT)
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                                                                                                  Product Information

                                                                                                  ManufacturerDFROBOT
                                                                                                  Manufacturer Part NoDFR1103
                                                                                                  Order Code4457333
                                                                                                  Technical Datasheet

                                                                                                  Data Sheet

                                                                                                  ProtocolGNSS
                                                                                                  Supply Voltage Min3.3VDC
                                                                                                  Supply Voltage Max5VDC
                                                                                                  No. of Channels-
                                                                                                  Frequency RF1.57542GHz
                                                                                                  Position Accuracy2m
                                                                                                  Module InterfaceI2C, UART
                                                                                                  Product Range-
                                                                                                  SVHCNo SVHC (21-Jan-2025)

                                                                                                  Product Overview

                                                                                                  DFR1103 is a Gravity: GNSS GPS BeiDou positioning module with RTC - I2C&UART. The module automatically obtains satellite time based on a preset calibration period and accurately calibrates the onboard RTC chip. This calibration effectively eliminates time errors caused by the RTC chip during extended operation or accidental situations. The system automatically cuts off power to the GNSS chip after calibration, significantly reducing overall system power consumption compared to GNSS-only solutions. Additionally, the user has the option to use the module as a positioning module by setting GNSS active all the time, providing accurate longitude, latitude, time, altitude, and other data. It is compatible with Arduino, ESP32, Raspberry Pi and other mainstream control devices. Ideal for scenarios requiring extended working hours and high-precision time, such as astronomical observation timers, NTP servers, and outdoor wireless sensor time synchronization.

                                                                                                  • Integrated GNSS and RTC functionality
                                                                                                  • Automatic satellite time calibration, RTC chip calibration, power efficiency
                                                                                                  • Satellite signal loss mitigation
                                                                                                  • Operating voltage range from 3.3 to 5VDC
                                                                                                  • L76K GNSS IC, 2.0m CEP GNSS accuracy
                                                                                                  • First positioning time: 30s (cold start), 2s (hot start)
                                                                                                  • Operation current: GNSS enable: 46mA and GNSS chip off <1mA
                                                                                                  • IPEX 1 antenna interface, 1561 to 1575.42MHz±3MHz antenna frequency
                                                                                                  • SD3031 RTC IC, time range: year 2000 to 2099
                                                                                                  • ±3.8ppm at 25°C time accuracy and PCB size: 32mm x 42mm

                                                                                                  Contents

                                                                                                  Gravity: GNSS positioning & timing module x1, GPS / BeiDou Active Ceramic Antenna (IPEX1 Connector), Gravity 4P sensor cable, 10 P connector.

                                                                                                  Technical Specifications

                                                                                                  Protocol

                                                                                                  GNSS

                                                                                                  Supply Voltage Max

                                                                                                  5VDC

                                                                                                  Frequency RF

                                                                                                  1.57542GHz

                                                                                                  Module Interface

                                                                                                  I2C, UART

                                                                                                  SVHC

                                                                                                  No SVHC (21-Jan-2025)

                                                                                                  Supply Voltage Min

                                                                                                  3.3VDC

                                                                                                  No. of Channels

                                                                                                  -

                                                                                                  Position Accuracy

                                                                                                  2m

                                                                                                  Product Range

                                                                                                  -

                                                                                                  Technical Docs (1)

                                                                                                  Technical Data Sheet EN

                                                                                                  Legislation and Environmental

                                                                                                  Country of Origin:
                                                                                                  Country in which last significant manufacturing process was carried outCountry of Origin:
                                                                                                  China
                                                                                                  Country in which last significant manufacturing process was carried out
                                                                                                  Tariff No:84733020
                                                                                                  US ECCN:7A994
                                                                                                  EU ECCN:NLR
                                                                                                  RoHS Compliant:Yes

                                                                                                  RoHS

                                                                                                  RoHS Phthalates Compliant:Yes

                                                                                                  RoHS

                                                                                                  SVHC:No SVHC (21-Jan-2025)
                                                                                                  Download Product Compliance Certificate

                                                                                                  Product Compliance Certificate

                                                                                                  Weight (kg):.02
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