The hardware requirements for the button include:
• Cellular data connection via TCP/IP to Revolar’s cloud services
◦ We are studying the option of 2G vs 3G. 2G has plenty of bandwidth, however support life is a concern.
• Assisted GPS hardware - combined ability to use cell tower triangulation and GPS signals to determine the user’s location.
• Most of the time the button will be entirely idle - in the lowest power possible sleep mode, not registered with the cellular network.
• Extremely low bandwidth and very rare connection events — occurring only upon an emergency alert and during button configuration and testing.
• OPTIONAL - Bluetooth Smart (LE) for configuration via SmartPhone app, alert tones, surrounding voice recording and other possible value-add optional features.
◦ We have not determined whether or not to include this in the first product
• Battery life of a month or more is desired, assuming very rare alerts or other network connections ( < 1X / week )
• LED(s) to visually indicate button status
• 1 button (possibly more if we add optional features to the product definition)