This product is part of Smart Relay Zelio Logic SR2/SR3, an offer of simple automation systems from 10 to 40 I/Os. This discrete I/O extension module offers 4 discrete inputs with 2 relay outputs. It is a module with discrete input voltage of 24V AC. It is an IP20 and IP40 rated product. It weighs 0.125kg. The main application of this module is industry and building/service sector. This product is certified by C-Tick, GL, UL, CSA and GOST. It meets EN/IEC 60068-2-27 Ea, EN/IEC 61000-4-5, EN/IEC 61000-4-12 and EN/IEC 61000-4-4 L3 standards. Easy to use, Zelio Logic provides a real alternative solutions based on cabled logic or specific cards.