Measures acceleration to find out if an elevator works and updates its status on accessibility.cloud.

This is how the sensor looks:

• Plug & Play installation using the maintenance 230V AC connector on top of the elevator's cabin
• Typical power consumption <1W, micro USB power adapter
• Sets the elevator's status to 'unknown' on accessibility.cloud if it has not been in use within typical usage time intervals
• M2M Nano SIM card leverages a comprehensive network of carriers to provide service in over 100 countries out of the box
• Built-in 150mA battery to actively send a maintenance event in case the device is actively unplugged
• Open source design based on Particle Electron IoT platform
• Analog Devices ADXL335 3-Axis ±3 g acceleration sensor
• U-blox SARA-U260/U270 3G module for communication with accessibility.cloud
• STM32F205RGT6 120MHz ARM Cortex M3 microcontroller
• 1MB flash, 128KB RAM
• Allows firmware updates over-the-air
• RGB status LED
• Real-time operation system (RTOS)