CB3SE Reset & Teardown (FCC ID 2ANDL-CB3SE)

Before you buy the Tuya Global CB3SE, check what's inside.

The CB3SE is a low-power embedded module featuring Wi-Fi and Bluetooth LE connectivity, powered by a BK7231N chipset. It is designed for IoT applications, offering a 32-bit MCU for processing and rich peripherals like PWM and UART.

⚠️ NOTE: Ensure the module operates within the specified 3.0-3.6V range and handle with appropriate ESD precautions.

Quick Specs

Manufacturer: Tuya Global
Model: CB3SE
Protocol: WiFi
Chipset: Beken BK7231N
Ecosystem: Tuya / Smart Life
App: Smart Life

🔧 Geek Corner (Flashing Info)

Chipset: BK7231N
Flashable: ✅ Yes
Info: The CB3SE module uses the BK7231N chipset, which is known to be flashable with custom firmware like OpenBeken/LibreTiny.

User Manual

Scanned pages from the official user manual:

CB3SE Manual

External Photos

Photos of the device exterior:

CB3SE Exterior

Internal Photos

Teardown photos showing the PCB and components:

CB3SE PCB

Verdict

The CB3SE is a WiFi device from the Tuya / Smart Life ecosystem.

📄 Click to view full text manual (SEO)

CB3SE Module Datasheet
Version: 20210611
Online Version
Contents
Contents
1 Product overview 2
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Change history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Module interfaces 3
2.1 Dimensions and footprint . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Pin deﬁnition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Deﬁnitions on test points . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Electrical parameters 8
3.1 Absolute electrical parameters . . . . . . . . . . . . . . . . . . . . . 8
3.2 Normal working conditions . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 RF power consumption . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Working current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 RF parameters 12
4.1 Basic RF features . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2 Wi-Fi transmission performance . . . . . . . . . . . . . . . . . . . . . 12
4.3 Wi-Fi receiving performance . . . . . . . . . . . . . . . . . . . . . . . 13
4.4 Bluetooth transmission performance . . . . . . . . . . . . . . . . . . 14
4.5 Bluetooth receiving performance . . . . . . . . . . . . . . . . . . . . 14
5 Antenna information 14
5.1 Antenna type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.2 Antenna interference reduction . . . . . . . . . . . . . . . . . . . . . 15
6 Packaging information and production instructions 18
6.1 Mechanical dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.2 Production instructions . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.3 Recommended oven temperature curve . . . . . . . . . . . . . . . . . 23
6.4 Storage conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7 MOQ and packaging information 26
i
Contents
8 Appendix: Statement 26
ii
Contents
CB3SE is an embedded low-power Wi-Fi module that T uya has developed. It consists
of a highly integrated RF chip BK7231N and a few peripherals. CB3SE not only
supports the Wi-Fi AP and STA modes, but also supports the Bluetooth LE.
1 / 28
1 PRODUCT OVERVIEW
1 Product overview
CB3SE is built in with a 32-bit MCU whose running speed can be up to 120 MHz, 2-MB
ﬂash memory, and 256-KB RAM, so as to support the T uya IoT cloud connection. The
MCU instructions specially extended for signal processing can eﬀectively implement
audio encoding and decoding.
Besides, it has rich peripherals, such as PWM and UART . There are six 32-bit PWM
outputs, making the chip very suitable for high-quality LED control.
1.1 Features
• Built in with the low-power 32-bit CPU, which can also function as an application
processor
• The clock rate: 120 MHz
• Working voltage: 3.0 to 3.6V
• Peripherals: 15 PWMs and 1 UART
• Wi-Fi connectivity
– 802.11 b/g/n
– Channels 1 to [email protected] GHz
– Support WEP, WPA/WPA2, and WPA/...