LOGO! DM16 230R expansion module, SV/I/O: 230V/230V/relay, 4HP, 8 DI/8 DO for LOGO! 8 The LOGO! expansion 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 expansion modules are available for this purpose, which enable the addition of digital and analog inputs and outputs with different input voltages.