24 VDC Voltage Supply _ -20°C...+70°CStorage Temperature _ -10°C...+60°C Operating temperature, IPERTU-SPL3P1-02-00-03-00_1 Digital Input - Transistor Output Slim Basic PLC CPU Modules, Built-in calendar-clock (RTC) _ Data logging via USB _Ethernet 10/100 Mbit, EMKO PLC HMI PANEL 9 Digital inputs (NPN / PNP) _ 6 Digital Outputs (PNP), 3 Channel 20kHz _ encoder or fast counter input _ 3 Channel 20kHz Pulse output frequency