Iono Pi Real Time Clock Input/Output Modules Sfera Labs Iono Pi Input/Output Modules with Real Time Clock feature a computing core based on the Raspberry Pi 4 Model B-2GB. Iono Pi I/O modules include several digital and analog input lines, support for standard interfaces such as 1- Wire and Wiegand, and power relay outputs typical of modern PLCs. The devices have a power supply with a 9V to 28V range of up to 3A output current at 5V and a real-time clock with a lithium backup battery. Sfera Labs Iono Pi applications range from data acquisition and control to home and building automation, access control, hotel room control solutions, and environmental monitoring.