This Schneider Electric Zelio Logic SR3 Discrete I/O Extension Module Smart Relays uses a supply voltage of 100-240 volts alternating current, has 10 inputs / outputs contact with screw-clamp terminals. This Discrete I/O Extension Module Smart Relays provides Zelio Logic relays with additional inputs and outputs. It has a compact form-factor, allowing installation on DIN rail. Simple ladder programming, adapted for non-specialists. Discovery package, coming with Zelio Soft programming software, the simplest way to learn and use this relay. Built-in EEPROM flash memory for data backup up to 10 years, easy-to-recover after a power shortage or incident. More I/O than SR2 model, for larger applications. This product meets EN/IEC 60068-2-27 Ea, EN/IEC 61000-4-12, EN/IEC 61000-4-3, EN/IEC 61000-4-2 level 3, EN/IEC 61000-4-5, EN/IEC 61000-4-6 level 3, EN/IEC 60068-2-6 Fc, EN/IEC 61000-4-11 and EN/IEC 61000-4-4 level 3 standards. Simple to select, install and program, Zelio Logic is suitable for all your applications. Flexible, it offers you the choice of 2 ranges, compact or modular, extendable and 2 programming languages (FBD or LADDER). Easy to use, Zelio Logic provides a real alternative to solutions based on cabled logic or specific cards.