Ultra-compact open-close detection

mcSens220 Series

Low-Power IoT Wireless Sensor

The mcSens220 combines a magnetic switch with other onboard sensors and the mcAir low-power wireless protocol into an affordable, long-lasting, and compact IoT remote sensing device.


The mcSens220 is an affordable, ultra-low-power remote sensor that lets you wirelessly collect and deliver data to the cloud. This built to last, pocket-sized Internet of Things device is a fully programmable, scalable and manageable solution that lasts for up to 5 years on a single CR2032 coin-cell battery.

Featuring various onboard sensors the mcSens220 can monitor multiple variables, from anywhere, and deliver that information to the cloud. In addition to the mcSens220’s onboard sensors, this device offers the versatility to interface with practically any sensor on the market making it a fully customizable sensor solution.

The mcSens220 employs the mcAir low-power communication protocol to deliver data to the cloud with a communication range of 90 meters (~300 feet.)

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Key Features

  • Wireless mcAir with 90 meter range (300 feet) in optimal conditions
  • Magnetic Open/Close Sensor
  • mcStudio/mcCloud integration
  • Ultra-low-power processor
  • 8Mbit Flash memory for local data collection
  • 2 programmable LED indicators
  • NIST Traceable Temperature Sensor
  • Low-power accelerometer
  • Up to 4 GPIOs
  • I2C, SPI, and UART interfaces
  • Integrated antenna
  • Power: 1x CR2032 battery
  • Ultra Compact Enclosure
  • Operational temperature: -20°C to +60°C (-4°F to +140°F)
  • Dimensions (Device): 29mm x 36mm x 10mm (1.15 in x 1.4 in x 0.39 in)
  • Dimensions (Magnet): 11mm x 36mm x 7mm (0.43 in x 1.4 in x 0.27 in)



Product Brief:
Download Product Brief
  • Release Date: 10/15/2020
  • Revision Number: v1.8
  • File Type: PDF File Download
User Manual:
User Manual Coming Soon
  • Release Date: TBD 2021
  • Revision Number: v1.0
  • File Type: PDF File Download

Devices can be programmed using the mcStudio IDE. Advanced users are encouraged to contact us for access to full featured development kits.

Sensor Features

Magnetic Open/Close Sensor (REED Switch)
Wireless mcAir with 90 meter range (300 feet) in optimal conditions with 2 programmable LED indicators and NIST Traceable Temperature Sensor
Low-power accelerometer powered off 1x CR2032 battery in Ultra Compact Enclosure