LOGO! DM8 24R expansion module, SV/I/O: 24V/24V/relay, 2HP 4 DI/4 DO, AC/DC/NPN input 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.