Schneider Electric SR3PACK2FUProduct Attribute Attribute Value Family Name Zelio Logic Family Number of Ports 26 Series Zelio SR3 Series UPC Code 785901571926 Overview Schneider Electric Zelio Logic SR2 SR3 Series Smart Relays For Simple Automation Systems up to 40 I O's: Easy to use, Zelio Logic provides a real alternative to solutions based on cabled logic or specific cards.. Features: Modbus or Ethernet communication extension modules 6, 10 or 14 discrete I O and 4 analog I O