Feature: Simple and very cost effective Analog I/p and 0/p modules Micro modular design 4K to 8k step memo Built in high speed counters Range: Input: 90VAC - 240 VAC/24VDC Output: Relay / Transistor and analog 1/05: up to 512 [ 256 I/p 256 o/p] SeriesSS,SV,EFtEX And many more extention modules.