Multi IO Extension Switch 590 [5321] : The relay extension serves as a power-saving alternative to standard coupling relays for operation with Art. No. 5267/5238. Bi-stable relay internal / external control like monostable relay / reduction of the holding current by up to 95% / input (signal) 24 VDC / output 230 VAC / 10 A / Relay 250 VAC / 16 A / integrated fuse (5x20 mm) to protect high quality equipment / 1 TE (18 mm)