LOGO! AM2 RTD extended module, SV: DC 12/24V, 2AE-50...+200°/C Pt100/1000 for LOGO! 8 The LOGO! extension modules allow a LOGO! configuration to be expanded very individually. A LOGO! 8 basic device can be expanded to 24 digital inputs, 20 digital outputs, 8 analog inputs and 8 analog outputs. Ten different extension modules are available for this purpose, which enable the addition of digital and analog inputs and outputs with different input voltages.