Sfera Labs Strato Pi UPS enhances the Raspberry Pi Model B version 2, 3 and 4 computers with several hardware features to make it suitable for use in professional applications where reliability and service continuity are key requirements. Strato Pi UPS is available as a bare board or fully assembled unit, including a Raspberry Pi 3 Model B+ or Raspberry Pi 4 Model B, in a standard DIN-rail case. Sfera Labs Strato Pi UPS board's and server's key features include:. 9-28Vdc power supply, with surge and reverse polarity protection, and 2.2A resettable fuse. up to 4.0A max current to the 5V Raspberry Pi power supply input pins (at 24Vdc). real time clock with replaceable CR1025 Lithium / Manganese Dioxide back-up battery. standard RS-232 and RS-485 interfaces to the Raspberry Pi serial line, with opto-isolator and electrostatic discharge protection.. on-board buzzer, connected to a GPIO pin of the Raspberry Pi board, for acoustic feedback. hardware watchdog implemented in the Strato Pi board, fully independent from the Raspberry Pi, controlled via the GPIO pins of the Raspberry Pi board. integrated boot loader for the Strato Pi micro-controller, allowing in-field firmware upgrades directly from the Raspberry Pi. embedded Microchip ATECC608A secure element chip. power supply and serial connections on a screw terminal block. integrated uninterruptible power supply, with external lead-acid 12V battery. 2.2A resettable fuse on battery input. auxiliary power supply output voltage, to power external devices through Strato Pi UPS. simple UPS status and control via the GPIO pins of the Raspberry Pi board. on-board LEDs for power supply, battery operations status and serial line activity.
Strato Pi UPS server only:. pre-assembled and tested Raspberry Pi 3 Model B+ or Raspberry Pi 4 Model B with Strato Pi board in a standard 4 modules DIN rail case. side access to HDMI and 3.5 mm jack for audio and composite video. access to all USB ports and Ethernet port