RN4020 replaceable UART throughput low power consumption Dialog DA14531 Bluetooth low energy BLE 5.1 module

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Price:$2.30 - $3.00
Price in USD:Details


Product Overview


Product Description

FSC-BT691 is an ultra-low-power Bluetooth module that uses the Dialog BLE 5.1 chip DA14531, supports UART/I2C/SPI interfaces.

FSC-BT691 is an ultra-low size Bluetooth 5.1 module with onboard antenna. Its ultra-small size is only 10mm * 11.9mm * 2mm, which provides users with ultra-high flexibility and multiple possibilities.

FSC-BT691 Ultra-small size BLE 5.1 module’s technical parameters:

Bluetooth module model
Bluetooth version
BLE 5.1
GATT Central & Peripheral
Transmit power
-19.5dBm - 2.5dBm
10mm x 11.9mm x 2mm
Power supply


*Medical application
*Proximity Tags and Trackers
*Smart Watches
*HID Device (Human Interface Device)
*Industrial Applications

Related Products

       Class 1 Bluetooth module

 High speed data rate BT module

                 BLE 5.0 module

Our Company

Feasycom focus on the researching and developing of IoT (internet of things) products, including Bluetooth Modules, WiFi and LoRa Modules, Bluetooth Beacon, etc. With more than 10-year experiences in the wireless connectivity, which ensure us have the capability for providing low-risk product development, reducing system integration cost and shortening product customization cycle to thousands of diverse customer worldwide.

APP Support
PCB Design
Development Board
Firmware Development
Depth Customization
Certification Request
Turn-Key Production Testing & Manufacturing

Our products and services mainly apply to Automotive, Point of Sale, Home Automation, Healthcare and Engineering, Banking, Computing, Vending Business, Location, Lighting and more.

Aiming at "Make Communication Easy and Freely", Feasycom is dedicated to design and develop high-quality products, efficient services to customers, for today, and all days to come.


Packing & Delivery


Q1.Are you a manufacturer or a trading company?
A1: We are a manufacturer.

Q2.Can you do ODM or OEM for us?
A2: We are glad to offer custom service for you, we have an experienced engineers team who will provide you with a complete solution according to your requirements.

Q3.Whether the product can be customized logo?
A3:For bulk orders, we support custom logo.

Q4.What is Bluetooth 5.0?
A4:Two times transmission speed compare with Bluetooth V4.2,Max Trans Speed can reach to 24Mbps.
Effective work distance can be 300m, 4 times of Bluetooth V4.2.

Q5.What is Bluetooth Dual Mode Module?
A5:Bluetooth Dual Mode Module is a Single-Module Bluetooth Solution with Built-in Bluetooth Basic Rate (BR)/Enhanced Data Rate (EDR)/Low Energy (LE) Functions.

Q6.What payment mothods do you accept?
A6:Paypal,T/T,W/U,Bank Transfering,Credit Card,Trade Assurance Payment,etc.

Q7.Lead time for sample orders/mass production orders?
A7:Samples,within 3 working days; Mass production,within 15 working days usually.

Q8.What shipping methods do you use?
A8:For samples,DHL/UPS/FEDEX/TNT,etc; For bulk orders,Air shipping or sea shipping.

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