T1-LC5 Module Datasheet

Last Updated on : 2024-06-14 17:57:47download

T1-LC5 module is a Wi-Fi and Bluetooth Low Energy (LE) combo module developed by Tuya Smart. It consists of a highly integrated wireless RF chip T1A and a few peripheral components, with a built-in Wi-Fi network protocol stack and various library functions.


It supports both the access point (AP) mode and station (STA) mode for Wi-Fi connection as well as a connection over Bluetooth LE. This module has a built-in 32-bit MCU with a maximum running speed of 160 MHz, built-in 1 MB flash memory, 288 KB RAM, and three 32-bit PWM outputs, making it ideal for high-quality LED control.


  • Built-in low-power 32-bit MCU that also acts as an application processor.
  • Clock rate of 160 MHz.
  • Operating voltage: 3.0V to 3.6V.
  • Peripherals: 3 pulse-width modulator (PWM) pins.
  • Wi-Fi connectivity
    • IEEE 802.11b/g/n.
    • Channels 1 to 14 at 2.4 GHz.
    • Supports WEP, WPA/WPA2, WPA/WPA2 PSK (AES), and WPA3 security modes.
    • The maximum output power is +17 dBm for IEEE 802.11b transmission.
    • Supports STA, AP, and STA + AP combo working modes.
    • Two pairing modes are supported, namely Wi-Fi Easy Connect (EZ mode) and access point (AP) mode. Both modes are available on Android and iOS devices.
    • Operating temperature: -40°C to 105°C.
    • The external monopole antenna has a peak gain of 2.3 dBi.
  • Bluetooth connectivity
    • Bluetooth Core Specification v5.2.
    • 6 dBm transmit power in Bluetooth mode.
    • Integral Wi-Fi and Bluetooth coexistence interface.


  • Smart building
  • Smart home and electrical appliance
  • Smart socket and light
  • Industrial wireless control

Module interfaces

Dimensions and footprint

The T1-LC5 dimensions are 8.5±0.35 mm (W) × 12.7±0.35 mm (L) × 2.6±0.15 mm (H).

T1-LC5 Module Datasheet

Pin definition

Pin No. Symbol I/O type Feature
1 ANT O Pin for the external antenna pad.
2 G P Ground.
3 M4 I/O Support hardware PWM, corresponding to Pin 24 on the IC.
4 M5 I/O Support hardware PWM, corresponding to Pin 26 on the IC.
5 M0 I/O Support hardware PWM, corresponding to Pin 9 on the IC.
6 3V3 P Power pin.

P indicates the power pin, and I/O indicates the input and output pin.

Definitions of test points

Symbol I/O type Feature
R2 I/O UART2_RX to receive the logs, corresponding to Pin 12 on the IC.
T2 I/O UART2_TX to transmit the logs, corresponding to Pin 0 on the IC.
R1 I/O UART1_RX to receive the user data, corresponding to Pin 10 on the IC.
T1 I/O UART1_TX to transmit the user data, corresponding to Pin 11 on the IC.
CEN I Before the module is powered on, pull this pin down to enter the RF test mode. Floating it or pulling it up will start the application firmware.
None I The RST pin, corresponding to CEN on the IC.

Test pins are not recommended.

Electrical parameters

Absolute electrical parameters

Parameter Description Min value Max value Unit
Ts Storage temperature -55 125 °C
VBAT Supply voltage -0.3 3.9 V
Electrostatic discharge voltage (human body model) TAMB -25°C -4 4 kV
Electrostatic discharge voltage (machine model) TAMB -25°C -200 200 V

Working conditions

Parameter Description Min value Typical value Max value Unit
Ta Operating temperature -40 N/A 105 °C
VBAT Supply voltage 3 3.3 3.6 V
VOL I/O low-level input VSS N/A VSS + 0.3 V
VOH I/O high-level output VBAT − 0.3 - VBAT V
Imax I/O drive current - 6 20 mA

Radio frequency (RF) power

Working status Mode Rate Transmit/Receive power Average value Peak (Typical) value Unit
Transmit 11b 11 Mbit/s +17 dBm 390 445 mA
Transmit 11g 54 Mbit/s +15 dBm 370 420 mA
Transmit 11n MCS7 +14 dBm 360 405 mA
Receive 11b 11 Mbit/s Continuous reception 37 45 mA
Receive 11g 54 Mbit/s Continuous reception 37 45 mA
Receive 11n MCS7 Continuous reception 37 45 mA

Operating current

Working mode Status (Ta = 25°C) Average value Peak (Typical) value Unit
Quick pairing (Bluetooth) The module is in EZ mode. The Wi-Fi network status indicator blinks quickly. 80 430 mA
Quick pairing (AP) The module is in AP mode. The Wi-Fi network status indicator blinks slowly. 85 450 mA
Quick pairing (EZ) The module is in EZ mode. The Wi-Fi network status indicator blinks quickly. 87 450 mA
Connected The module is connected to the cloud. The Wi-Fi network status indicator is steady on. 90 430 mA
Weakly connected The connection between the module and the hotspot is intermittent. The Wi-Fi network status indicator is steady on. 190 460 mA
Disconnected The module is disconnected from the cloud. The Wi-Fi network status indicator is steady off. 67 420 mA
Module disabled The module’s clock enable (CEN) pin is pulled down. 330 N/A μA

RF parameters

Basic RF features

Parameter Description
Operating frequency 2.412 to 2.484 GHz
Wi-Fi standard IEEE 802.11b/g/n (channels 1–14)
Data transmission rate
  • IEEE 802.11b: 1, 2, 5.5, and 11 Mbit/s
  • IEEE 802.11g: 6, 9, 12, 18, 24, 36, 48, and 54 Mbit/s
  • IEEE 802.11n: HT20 MCS0-7
Antenna type External monopole antenna

Wi-Fi transmitter (TX) performance

Parameter Min value Typical value Max value Unit
RF average output power, 802.11b CCK mode, 11M - 17 - dBm
RF average output power, 802.11g OFDM mode, 54M - 15 - dBm
RF average output power, 802.11n HT20 OFDM mode, MCS7 - 14 - dBm
Frequency error -20 - 20 ppm

Wi-Fi receiver (RX) performance

Parameter Min value Typical value Max value Unit
PER < 8%, RX sensitivity, 802.11b DSSS mode, 11M - -88 - dBm
PER < 10%, RX sensitivity, 802.11g OFDM mode, 54M - -75 - dBm
PER < 10%, RX sensitivity, 802.11n HT20 OFDM mode, MCS7 - -72 - dBm
PER < 10%, RX sensitivity, Bluetooth, 1M - -93 - dBm

Bluetooth transmitter (TX) performance

Parameter Min value Typical value Max value Unit
Operating frequency 2402 - 2480 MHz
Transmission rate over the air - 1 - Mbit/s
Transmission power -20 6 20 dBm
Frequency error -150 - 150 KHz

Bluetooth RX performance

Parameter Min value Typical value Max value Unit
RX sensitivity - -93 - dBm
Max RF signal input -10 - - dBm
Intermodulation - - -23 dBm
Adjacent-channel rejection ratio - 10 - dB

Antenna information

Antenna type

The T1-LC5 module uses an external monopole antenna.

Antenna interference reduction

The distance between the antenna and other mental components should be at least 15 mm to provide the best Wi-Fi performance.

Traces and copper pour areas are not allowed in the antenna area of the PCB. Otherwise, antenna performance might be reduced.

Packing and production instructions

Mechanical dimensions

T1-LC5 Module DatasheetT1-LC5 Module DatasheetT1-LC5 Module Datasheet

The following figure shows the recommended footprint of the T1-LC5 module.

T1-LC5 Module Datasheet

The default tolerance of the external dimensions of the module is ±0.35 mm, and the tolerance of key dimensions is ±0.1 mm. If you have special requirements for key dimensions, specify them in the datasheet after consultations.

Production instructions

  1. We recommend using a wave soldering device to solder Tuya’s DIP modules, and manual soldering can be used only when wave soldering device is unavailable. Complete soldering within 24 hours after unpacking. Otherwise, place the module in a moisture-proof box with a relative humidity level of no more than 10%, or pack the module in vacuum again. Then, record the packing time and duration of exposure. The total exposure duration cannot exceed 168 hours.
  2. Soldering device and materials:
    • Wave soldering equipment
    • Wave soldering fixture
    • Constant-temperature soldering iron
    • Tin bar, tin wire, and flux
    • Thermal profiler
  3. Instruments or devices required for the baking process:
    • Cabinet oven
    • Anti-electrostatic and heat-resistant trays
    • Anti-electrostatic and heat-resistant gloves
  4. The module needs to be baked in the following cases:
    • The vacuum packaging bag is damaged before unpacking.
    • After unpacking, no HIC is found in the packaging bag.
    • After unpacking, the HIC indicates a humidity level of 10% or higher (the circle turns pink on the HIC).
    • The total exposure time has lasted for over 168 hours since unpacking.
    • More than 12 months have passed since the first sealing of the bag.
  5. The baking parameter settings are described below:
    • Baking temperature: 40°C for reel packaging with relative humidity ≤ 5%. And 125°C for tray packaging with relative humidity ≤ 5% (use the heat-resistant tray, rather than plastic containers).
    • Baking time: 168 hours for reel packaging and 12 hours for tray packaging.
    • Temperature for triggering an alert: 50°C for reel packaging and 135°C for tray packaging.
    • Production can begin after a module has cooled below 36°C under natural conditions.
    • If a module remains unused for over 168 hours after being baked, it needs to be baked again.
    • If a batch of modules is not baked after exposure for more than 168 hours, do not use wave soldering to solder them. Because these modules are level-3 moisture-sensitive devices, they are very likely to get damp when exposed beyond the allowable time. In this case, if they are soldered at high temperatures, device failure or poor soldering performance might occur.
  6. In the whole production process, take electrostatic discharge (ESD) protective measures.
  7. In order to ensure good product quality, focus on the amount of flux sprayed and peak height during production. Check whether the tin slag and copper contents in the wave soldering tank exceed the standard amount, whether the fixture opening and thickness are appropriate, and whether the oven temperature curve of the wave soldering is proper.

Recommended oven temperature curve and temperature

Set the oven temperatures according to the following temperature curve of wave soldering. The peak temperature is 260°C±5°C.

T1-LC5 Module Datasheet

Suggestions on the soldering temperature:

Suggestions on wave soldering Suggestions on manual soldering
Preheat temperature 80°C to 130°C Soldering temperature 360°C ± 20°C
Preheat duration 75s to 100s Soldering duration Less than 3s/point
Contact duration at the peak 3s to 5s N/A N/A
Solder tank temperature 260 ± 5°C N/A N/A
Ramp-up slope ≤ 2°C/s N/A N/A
Ramp-down slope ≤ 6°C/s N/A N/A

Storage conditions

A delivered module must meet the following storage requirements:

  • The moisture-proof bag must be packed in vacuum and placed in an environment where the temperature is below 40°C and the relative humidity is lower than 90%.

  • The shelf life of a dry-packaged product is 12 months from the date when the product is packaged and sealed.

  • A humidity indication card (HIC) is put in the sealed package.

    T1-LC5 Module Datasheet

    T1-LC5 Module Datasheet

MOQ and packaging information

Product model MOQ (pcs) Shipping packaging Modules per reel (pcs) Reels per carton
T1-LC5 6,800 Tape and reel 1,700 4

Appendix: Statement

FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this device.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Note: This device has been tested and found to comply with the limits for a Class B digital device, according to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This device generates, uses, and can radiate radio frequency energy and, if not installed and used following the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

If this device does cause harmful interference to radio or television reception, which can be determined by turning the device off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

  • Reorient or relocate the receiving antenna.
  • Increase the separation between the device and receiver.
  • Connect the device to an outlet on a circuit different from that to which the receiver is connected.
  • Consult the dealer or an experienced radio/TV technician for help.

Radiation Exposure Statement

This device complies with FCC radiation exposure limits set forth for an uncontrolled rolled environment. This device should be installed and operated with a minimum distance of 20cm between the radiator and your body.

Important Note

This radio module must not be installed to co-locate and operate simultaneously with other radios in the host system except in accordance with FCC multi-transmitter product procedures. Additional testing and equipment authorization may be required to operate simultaneously with other radio.

The availability of some specific channels and/or operational frequency bands are country dependent and are firmware programmed at the factory to match the intended destination. The firmware setting is not accessible by the end-user.

The host product manufacturer is responsible for compliance with any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. The final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed.

The end-user manual shall include all required regulatory information/warning as shown in this manual, including: This product must be installed and operated with a minimum distance of 20 cm between the radiator and user body.

The RF module is considered as a limited modular transmitter according to FCC rules. Even though the RF module gets an FCC ID, the host product manufacturer can not use the FCC ID on the final product directly. In these circumstances, the host product manufacturer integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining the FCC authorization by a Class II permissive change application or a new application.

Declaration of Conformity European Notice

T1-LC5 Module Datasheet

Hereby, Hangzhou Tuya Information Technology Co., Ltd declares that this module product is in compliance with essential requirements and other relevant provisions of Directive 2014/53/EU,2011/65/EU. A copy of the Declaration of conformity can be found at https://www.tuya.com.

T1-LC5 Module Datasheet

This product must not be disposed of as normal household waste, in accordance with the EU directive for waste electrical and electronic equipment (WEEE- 2012/19/EU). Instead, it should be disposed of by returning it to the point of sale, or to a municipal recycling collection point.

The device could be used with a separation distance of 20cm from the human body.