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M3861LT1 1T1R 802.11b/g/n WiFi IoT Module

  • Hi3861L
  • UART
  • 2.4GHz
  • 72.2Mbps
  • 1x1 1T1R
  • 12*12*2.1mm
  • BL-M3861LT1


  • Without BT 


  • 1T1R 



BL-M3861LT1 is a low-power IoT module designed based on Hi3861L. This module compatible IEEE 802.11 b/g/n standard and provides the maximum PHY rate up to 72.2Mbps, supports standard bandwidth of 20MHz and  narrow bandwidth of 5MHz/10MHz. It is suitable for Internet of things applications based on WLAN communication, such as smart locks, wireless doorbells, low-power cameras, intelligent wireless sensor and so on.


  • Operating Frequency: 2.4~2.4835GHz

  • IEEE Standards: IEEE 802.11b/g/n

  • Wireless PHY rate can reach up to 72.2Mbps

  • High-performance 32 bit MCU: maximum operating frequency of 160 MHz

  • Embedded Memory: 352KB SRAM and 2MB Flash

  • Provides multiple peripheral interfaces

  • Low power consumption: Ultra deep sleep mode of 3uA and DTIM1 of 0.97mA@3.3V

  • Wide operating temperature: -40~85℃

  • DC 3.3V main power and DC3.3V/1.8V IO power supply

Block Diagram

图片 1

General Specifications

Module Name




WLAN Standards


Host Interface



Connect to the external antenna through half hole pad



Power Supply

DC 3.3V±0.2V @ 450 mA (Max) main power

DC 3.3V±0.2V or 1.8V±0.1V I/O power

Operation Temperature

-40℃ to +85℃

Operation Humidity

10% to 95% RH (Non-Condensing)

Product Dimension

截屏2024-06-14 15.36.12

Module dimension: 12*12*1.67mm(L*W*H; Tolerance: ±0.3mm_L/W, ±0.2mm_H)

Package Dimensions



Package specification:

1. 1,000 modules per roll and 5,000 modules per box.

2. Outer box size: 37.5*36*29cm.

3. The diameter of the blue environment-friendly rubber plate is 13 inches, with a total thickness of 28mm 

    (with a width of 24mm carrying belt).

4. Put 1 package of dry agent (20g) and 1 humidity card in each anti-static vacuum bag.

5. Each carton is packed with 5 boxes.


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