Quectel KCMA32S
Dual-Mode BLE 5.3 & ZigBee 3.0
The Quectel KCMA32S is an advanced dual-mode wireless module combining Bluetooth Low Energy 5.3 and ZigBee 3.0 capabilities in a single, power-efficient package. Built on the Silicon Labs EFR32MG21 wireless SoC with an ARM Cortex-M33 processor running at up to 80 MHz, this module delivers exceptional performance for healthcare IoT applications requiring reliable, low-power wireless connectivity with mesh networking capabilities.
Processor
ARM Cortex-M33
Up to 80 MHz, 32-bit RISC
Floating-point unit (FPU)
Memory
768 KB or 1024 KB Flash
96 KB RAM
Optional configurations available
Wireless
BLE 5.3 + Long Range, 2 Mbps
ZigBee 3.0 Mesh networking
TX Power: +20 dBm, Sensitivity: -104 dBm
Power
Deep sleep: 0.4 μA
BLE TX (0 dBm): 4.8 mA
Voltage: 1.7V - 3.6V
I/O Interfaces
GPIO: 20 pins
SPI, I2C, UART, I2S
12-bit ADC
Package
LCC + LGA (20mm × 12mm × 2.2mm)
Operating: -40°C to +85°C
CE, FCC, IC certified
Healthcare Sensor Integration Examples
Vital Signs Monitoring
Connect ECG sensors (ADS1293), pulse oximeters (MAX30102), and temperature sensors (MLX90614) via I2C or SPI. BLE for real-time streaming to mobile devices, ZigBee mesh for hospital-wide data aggregation.
Motion & Fall Detection
Integrate 9-axis IMU sensors (LSM9DS1) via SPI for precise motion tracking. Use accelerometer and gyroscope data to detect falls, analyze gait patterns, and monitor patient mobility in real-time.
Environmental Sensors
Connect BME680 (temperature, humidity, air quality) and VEML7700 (ambient light) via I2C. Create smart rooms that adjust conditions for patient comfort and monitor environmental factors affecting recovery.
Presence Detection
Use PIR sensors (AM312) or mmWave radar (LD2410) via GPIO for bed occupancy detection. ZigBee mesh network enables whole-facility monitoring with sub-second response times for emergency alerts.
Audio Monitoring
Connect MEMS microphones (ICS-43434) via PDM interface for non-invasive respiratory monitoring and distress detection. On-chip DSP processes audio patterns for cough detection and breathing rate analysis.
Wearable Devices
Build compact wrist or chest-worn monitors with heart rate (HRS3300), accelerometer (LIS3DH), and battery management (MAX17048). BLE 5.3 Long Range extends connectivity up to 400m line-of-sight.
Mesh Network Hub
Deploy as ZigBee coordinator to create self-healing mesh networks supporting 65,000+ nodes. Route sensor data from multiple rooms through relay nodes to central gateway with automatic failover and path optimization.
Cloud Gateway
Interface with WiFi modules (ESP32-C3) or LTE modems (BG95-M3) via UART for cloud connectivity. Aggregate BLE/ZigBee sensor data and transmit to AWS IoT, Azure IoT Hub, or custom MQTT brokers with TLS 1.3 security.
Development Resources
The Quectel KCMA32S is built on Silicon Labs' EFR32MG21 SoC and is compatible with Silicon Labs' Gecko SDK and Simplicity Studio development environment. It provides extensive libraries for sensor integration, BLE profiles (GATT, HRS, BAS), and ZigBee cluster libraries. Development boards and evaluation kits (KCMA32S TE-B EVB) are available with comprehensive documentation, reference designs, and example code for rapid prototyping of healthcare IoT solutions.