

PRODUCTS
BoT-nLE521 Series
PRODUCTS
BoT-nLE521 Series
The Most Cost-Effective and Complete Smartphone Connectivity Solution. A best-selling module certified both domestically and globally
The BoT-nLE521 is a slave-only module optimized for developing smartphone-connected products based on BLE 5.0 technology.
With an ultra-low standby current of just 7μA in sleep mode, it maximizes battery life. Certified with major global standards such as KC, CE, and FCC, it provides the most reliable pathway to entering global markets.
Bluetooth Module
BLE 5.0
Class2 (20m)
Slave
KC, CE, FCC, JAPAN MIC,
SIG Bluetooth
Bluetooth Module
BLE 5.0
Class2 (20m)
Slave
KC, CE, FCC, JAPAN MIC, SIG Bluetooth
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BoT-nLE521 Series
Key Features

Low Power Bluetooth
BLE (Bluetooth Low Energy) consumes only 7μA in sleep mode, delivering optimal efficiency for battery-powered devices.

Optimized for Smartphone Connectivity
A compact module designed with essential features required for smartphone integration, offering excellent cost efficiency.

Compact Size
With a small form factor of 8 × 15 × 1.8mm, it can be easily applied across various applications without size constraints.

Global Certifications
Fully certified with major global standards including KC, CE, FCC, IC, Japan MIC, and Bluetooth SIG, ensuring quality and eliminating additional certification costs at the module level.

Full Android & iOS Support
Offers excellent compatibility, enabling immediate connection to iPhone/iPad (iOS) without requiring additional MFi certification, as well as Android devices.

SMD Reel Packaging
Available in individual packaging or reel packaging depending on order quantity. For mass production, SMD types are supplied in reel packaging.

Dedicated Technical Support
From circuit review to antenna matching and certification guidance, our wireless experts support your entire development process.
BoT-nLE521 Series
Specifications

BoT-nLE521
Category
SMD Type (+Chip Antenna)
Network Connectivity
Bluetooth5.0(BLE)
Role
Slave
Antenna
Chip Antenna
Tx Power
Max +4dBm
Communication Range
Class2 (20m)
Receiving Sensitivity
-96dBm
Interface
3.3V UART
Baud Rate
2,400~460,800bps
Current Consumption
Sleep mode: 0.007mA
Advertising: 0.592mA
Power Input
1.7V to 3.6V
Dimensions
8 x 15 x 1.8mm
Temperature
-40℃~ +85℃
Certifications
KC, CE, FCC, JAPAN MIC, IC, SIG Bluetooth

BoT-nLE521D
Category
DIP Type (+Chip Antenna)
Network Connectivity
Bluetooth5.0(BLE)
Role
Slave
Antenna
Chip Antenna
Tx Power
Max +4dBm
Communication Range
Class2 (20m)
Receiving Sensitivity
-96dBm
Interface
3.3V UART
Baud Rate
2,400~460,800bps
Current Consumption
Sleep mode: 0.007mA
Advertising: 0.592mA
Power Input
1.7V to 3.6V
Dimensions
18 x 19 x 11mm
Temperature
-40℃~ +85℃
Certifications
KC, CE, FCC, JAPAN MIC, IC, SIG Bluetooth

BoT-nLE521DU
Category
DIP Type (+U.FL Connector)
Network Connectivity
Bluetooth5.0(BLE)
Role
Slave
Antenna
U.FL Connector for External Antenna
Tx Power
Max +4dBm
Communication Range
Class2 (20m)
Receiving Sensitivity
-96dBm
Interface
3.3V UART
Baud Rate
2,400~460,800bps
Current Consumption
Sleep mode: 0.007mA
Advertising: 0.592mA
Power Input
1.7V to 3.6V
Dimensions
18 x 19 x 11mm
Temperature
-40℃~ +85℃
Certifications
KC, CE, FCC, JAPAN MIC, IC, SIG Bluetooth

EVB-nLE521
Category
BoT-nLE521 Evaluation Board
Network Connectivity
Bluetooth5.0(BLE)
Role
Slave
Antenna
Chip Antenna
Tx Power
Max +4dBm
Communication Range
Class2 (20m)
Receiving Sensitivity
-96dBm
Interface
3.3V UART
Baud Rate
2,400~460,800bps
Current Consumption
Sleep mode: 0.007mA
Advertising: 0.592mA
Power Input
1.7V to 3.6V
Dimensions
60 x 74 x 14mm
Temperature
-40℃~ +85℃
Certifications
KC, CE, FCC, JAPAN MIC, IC, SIG Bluetooth
BoT-nLE521 Specifications

BoT-nLE521
Category
SMD Type (+Chip Antenna)
Network Connectivity
Bluetooth5.0(BLE)
Role
Slave
Antenna
Chip Antenna
Tx Power
Max +4dBm
Communication Range
Class2 (20m)
Receiving Sensitivity
-96dBm
Interface
3.3V UART
Baud Rate
2,400~460,800bps
Current Consumption
Sleep mode: 0.007mA
Advertising: 0.592mA
Power Input
1.7V to 3.6V
Dimensions
8 x 15 x 1.8mm
Temperature
-40℃~ +85℃
Certifications
KC, CE, FCC, JAPAN MIC, IC, SIG Bluetooth
BoT-nLE521D Specifications

BoT-nLE521D
Category
DIP Type (+Chip Antenna)
Network Connectivity
Bluetooth5.0(BLE)
Role
Slave
Antenna
Chip Antenna
Tx Power
Max +4dBm
Communication Range
Class2 (20m)
Receiving Sensitivity
-96dBm
Interface
3.3V UART
Baud Rate
2,400~460,800bps
Current Consumption
Sleep mode: 0.007mA
Advertising: 0.592mA
Power Input
1.7V to 3.6V
Dimensions
18 x 19 x 11mm
Temperature
-40℃~ +85℃
Certifications
KC, CE, FCC, JAPAN MIC, IC, SIG Bluetooth
BoT-nLE521DU Specifications

BoT-nLE521DU
Category
DIP Type (+U.FL Connector)
Network Connectivity
Bluetooth5.0(BLE)
Role
Slave
Antenna
U.FL Connector for External Antenna
Tx Power
Max +4dBm
Communication Range
Class2 (20m)
Receiving Sensitivity
-96dBm
Interface
3.3V UART
Baud Rate
2,400~460,800bps
Current Consumption
Sleep mode: 0.007mA
Advertising: 0.592mA
Power Input
1.7V to 3.6V
Dimensions
18 x 19 x 11mm
Temperature
-40℃~ +85℃
Certifications
KC, CE, FCC, JAPAN MIC, IC, SIG Bluetooth
EVB-nLE521 Specifications

EVB-nLE521
Category
BoT-nLE521 Evaluation Board
Network Connectivity
Bluetooth5.0(BLE)
Role
Slave
Antenna
Chip Antenna
Tx Power
Max +4dBm
Communication Range
Class2 (20m)
Receiving Sensitivity
-96dBm
Interface
3.3V UART
Baud Rate
2,400~460,800bps
Current Consumption
Sleep mode: 0.007mA
Advertising: 0.592mA
Power Input
1.7V to 3.6V
Dimensions
60 x 74 x 14mm
Temperature
-40℃~ +85℃
Certifications
KC, CE, FCC, JAPAN MIC, IC, SIG Bluetooth
Solution
Applications
Introducing solutions powered by the BoT-nLE521SerIes.

Breathalyzer

Beauty Device

Air Purifier

Bidet

Walking Assist Device

Air Quality Monitor
