# Wi-SUN KCM0A5S

## Summary

- MCU Wi-SUN module
- LCC form factor
- 28.0 mm × 22.0 mm × 3.15 mm
- Operating temperature range: -40°C to +85°C

## Specifications

- Supported Frequency Bands:
  - 470–928MHz, pin antenna interface
  - 470–928MHz, 1st generation RF coaxial connector
  - 902–928MHz, pin antenna interface
  - 902–928MHz, 1st generation RF coaxial connector

## Key features

- 470–928 MHz frequency band
- 256 KB RAM and 2 MB flash
- Wi-SUN FAN 1.1 standard protocol (OFDM/FSK modulation)
- Supports 1 EUSART, 1 SWD and 23 GPIO interfaces by default and multiple interfaces including EUSART, I2C, ADC, USB via pin multiplexing
- RF coaxial connector (IPEX Gen 1), pin antenna interface (optional)

## Overview

KCM0A5S is a high-performance MCU Wi-SUN module launched by Quectel. It boasts an ARM Cortex-M33 processor with a frequency of up to 97.5 MHz, and supports 470–928 MHz frequency band. The module features built-in 256 KB RAM and 2 MB flash, ensuring efficient performance.

KCM0A5S series contains KCM0A5S, KCM0A5S-868 and KCM0A5S-470. KCM0A5S is in an LCC form factor with an ultra-compact size of 28.0 mm × 22.0 mm × 3.15 mm, which optimizes the size and cost for end-products and is compatible with diverse designs.

KCM0A5S supports the Wi-SUN FAN 1.1 standard protocol, utilizing IPv6-based wireless mesh networking technology. It features adaptive frequency hopping and strong anti-interference capabilities, offering high capacity, long-range transmission, enhanced security, and high-speed data rates. Designed for battery-powered applications, KCM0A5S is widely used in smart metering (electricity/water/gas meters), smart street lighting, smart cities, precision agriculture, and industrial IoT solutions.

## Product Brochure

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

## Documentation and resources

- **[AT Commands Manual](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-sun-kcm0a5s%2F)**  
  File Size: 282.53 KB

- **[Hardware Development Resources](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-sun-kcm0a5s%2F)**  
  - [Quectel_KCM0A5S_2D_Dimensions_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-sun-kcm0a5s%2F) (File Size: 128.61 KB)
  - [Quectel_KCM0A5S_3D_Dimensions_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-sun-kcm0a5s%2F) (File Size: 716.79 KB)
  - [Quectel_KCM0A5S_Footprint&Part_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-sun-kcm0a5s%2F) (File Size: 710.92 KB)

- **[User Guide](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-sun-kcm0a5s%2F)**  
  - [Quectel_KCM0A5S_Series_Firmware_Flashing_User_Guide_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-sun-kcm0a5s%2F) (File Size: 1.40 MB)
  - [Quectel_KCM0A5S_TE-B_User_Guide_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-sun-kcm0a5s%2F) (File Size: 1.50 MB)

## Related products

### [KCM0A5S TE-B EVB kit](https://www.quectel.com/product/kcm0a5s-te-b-evb-kit/)
![KCM0A5S TE-B EVB kit](https://www.quectel.com/content/uploads/2025/04/KCM0A5S_TE-B_EVB_Kit_1025x871.png)  
*12 May 2025*  
[Read more: KCM0A5S TE-B EVB kit](https://www.quectel.com/product/kcm0a5s-te-b-evb-kit/)

### [Quectel_KCM0A5S_Series_AT_Commands_Manual_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fwi-sun-kcm0a5s%2F) — File Size: 282.53 KB

## Also of interest

- [MCU Bluetooth HCM010S-E](https://www.quectel.com/product/mcu-bluetooth-hcm010s-e/)
- [Quectel introduces KCM0A5S Wi-SUN module for...](https://www.quectel.com/news-and-pr/kcm0a5s-wi-sun-module-smart-city-utility-devices/)
- [Wi-Fi & Bluetooth FCM365X](https://www.quectel.com/product/wi-fi-bluetooth-fcm365x/)