This Zelio Logic SR2 memory cartridge allows to store data and parameters of your Zelio Logic relay. This memory cartridge is designed for Zelio Logic relays with firmware version above 3.0. Specifications Main range of product Phaseo Zelio Logic Accessory / separate part designation EEPROM memory cartridge accessory / separate part type Memory cartridge Accessory / separate part category Separate parts Accessory / separate part destination For firmware version >= 3.0 Complementary Net weight 0.02 lb(US) (0.01 kg)