NL Reset & Teardown (FCC ID 2ANDL-CB3S-NL)

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

This device is a low-power Wi-Fi module based on the BK7231NL chipset, designed for integration into various smart home products. It supports Wi-Fi connectivity and Bluetooth LE, making it versatile for IoT applications.

⚠️ NOTE: Ensure correct battery polarity and voltage is supplied. Do not expose to extreme temperatures.

Quick Specs

Manufacturer: Tuya Global
Model: NL
Protocol: WiFi, Bluetooth LE
Chipset: Beken BK7231N
Ecosystem: Tuya / Smart Life
App: Smart Life

🔧 Geek Corner (Flashing Info)

Chipset: BK7231NL
Flashable: ✅ Yes
Info: The CB3S module with BK7231NL chipset is known to be flashable with OpenBeken/LibreTiny firmware.

User Manual

Scanned pages from the official user manual:

NL Manual

External Photos

Photos of the device exterior:

NL Exterior

Internal Photos

Teardown photos showing the PCB and components:

NL PCB

Verdict

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

📄 Click to view full text manual (SEO)

CB3S-NL Module Datasheet
Version: 20220210
Online Version
Contents
Contents
1 Product overview 2
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Change history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Module interfaces 4
2.1 Dimensions and footprint . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Pin definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Electrical parameters 8
3.1 Absolute electrical parameters . . . . . . . . . . . . . . . . . . . . . 8
3.2 Normal working conditions . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 RF power consumption . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Operating 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 . . . . . . . . . . . . . . . . . . 13
4.5 Bluetooth receiving performance . . . . . . . . . . . . . . . . . . . . 14
5 Antenna information 15
5.1 Antenna type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.2 Interference reduction . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6 Packaging information and production instructions 18
6.1 Mechanical dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.2 Production instructions . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.3 Recommended oven temperature curve . . . . . . . . . . . . . . . . . 23
6.4 Storage conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7 MOQ and packaging information 26
I
Contents
8 Appendix: Statement 27
8.1 Industry Canada Statement . . . . . . . . . . . . . . . . . . . . . . . 29
II
Contents
CB3S-NL is an embedded low-power Wi-Fi module that T uya has developed. It con-
sists of a highly integrated RF chip BK7231NL and a few peripherals. CB3S-NL not
only supports the Wi-Fi AP and STA modes, but also supports the Bluetooth LE.
1 / 30
1 Product overview
1 Product overview
CB3S-NL 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, to connect to the T uya IoT cloud. The MCU in-
structions 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
• Clock rate: 120 MHz
• Operating voltage: 3.0 to 3.6V
• Peripherals: 6 PWMs and 1 UART
• Wi-Fi connectivity
– 802.11 b/g/n
– Channels 1 to [email protected] GHz
– Support WEP, WPA/WPA2, and WPA/...