060B205066, Danfoss, Pressure Switch. MP 54 differential pressure switch, fixed differential, low differential pressure. Control voltage: 230 V or 115 V a.c. or d.c;Permissible voltage variation: +10 - -15%;Max. working pressure = 17 bar; Max. test pressure = 22 bar; Operation range, LP side: –1 - 12 bar Pe; Temperature compensation: The time relay is temperature-compensated in the range -40 - +60°C; Screwed cable entry: Pg 13.5; Max. bellows temperature: 100°C; Enclosure: IP 20 to IEC 529.