# Wi-Fi & Bluetooth FGM842D series

## Summary

- Wi-Fi 4 single-band and BLE 5.2 module
- LGA form factor
- FGM842D: 12.5mm × 13.2mm × 1.8mm
- FGM842D-P: 16.6mm × 13.2mm × 1.8mm
- FGM842D: 1.05g
- FGM842D-P: 1.14g
- Operating temperature range: -40℃ to +105℃
- Storage temperature range: -45℃ to +115℃

## Key features

- Wi-Fi 4 module, single band (2.4GHz) Wi-Fi, 1 × 1 antenna
- Bluetooth Low Energy (BLE 5.2)
- Built-in 288KB RAM and 2MB flash
- Supports IEEE 802.11b/g/n
- Supports up to 19 GPIOs for SPI, I2C, ADC and PWM interfaces in QuecOpen® solution
- RF coaxial connector, pin antenna interface, PCB antenna (optional)
- Wide operating temperature range

## Overview

FGM842D is a series of cutting-edge MCU Wi-Fi and Bluetooth modules launched by Quectel. It boasts a high-performance processor (ARM968) with a frequency of up to 160MHz and supports IEEE 802.11b/g/n protocol and BLE 5.2. The module features built-in 288KB RAM and 2MB flash, ensuring efficient performance.

The module is in an LGA form factor with an ultra-compact package size, which optimizes the size and cost for end-products and is compatible with diverse designs.

The module complies with WPA-PSK, WPA2-PSK and WPA3-SAE security standards, supports TRNG (True Random Number Generator) and AES-128 encryption algorithm, and supports secure firmware and flash encryption.

The module supports UART and GPIO interfaces by default and supports SPI, I2C, ADC and PWM functions in QuecOpen® solution and many low power consumption modes and keep-alive mechanisms, which provide flexibility and versatility for a range of applications, especially in smart homes and industrial IoT scenarios.

The module supports QuecOpen® solution and standard AT commands, with a compact protocol, and can realize efficient product development for customers.

## Documentation and resources

### Hardware Development Resources
- [Quectel_FGM842D_Series_Hardware_Design_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-fi-bluetooth-fgm842d%2F) - File Size: 2.08 MB
- [Quectel_FGM842D_2D_Dimensions_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-fi-bluetooth-fgm842d%2F) - File Size: 118.01 KB
- [Quectel_FGM842D_3D_Dimensions_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-fi-bluetooth-fgm842d%2F) - File Size: 513.96 KB
- [Quectel_FGM842D_Footprint&Part_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-fi-bluetooth-fgm842d%2F) - File Size: 219.95 KB
- [Quectel_FGM842D-P_2D_Dimensions_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-fi-bluetooth-fgm842d%2F) - File Size: 184.99 KB
- [Quectel_FGM842D-P_3D_Dimensions_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-fi-bluetooth-fgm842d%2F) - File Size: 527.64 KB
- [Quectel_FGM842D-P_Footprint&Part_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-fi-bluetooth-fgm842d%2F) - File Size: 220.58 KB
- [Quectel_FGM842D_Series_TE-B_User_Guide_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-fi-bluetooth-fgm842d%2F) - File Size: 1.11 MB

## Product Brochure
[Download](https://www.quectel.com/content/uploads/2026/05/Quectel_Product_Brochure_V8.6.pdf) Quectel_Product_Brochure_V8.6.pdf

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