Manufacturer: FEMA DCM25-205 FEMA Pressure switch for liquid, gas (DCM) For overpressure monitoring of non-aggressive liquids and gaseous media. Kind of pressure: overpressure, relative Pressure connection: internal thread G1/4, external thread G1/2 Electrical connection: Plug DIN EN 175301 Protection class: IP54 Housing material: rugged housing of seawater resistant aluminium die casting GD Al Si 12. Media temp.: -25...70C Media temp. limit: temperatures up to 85 °C are allowable for short periods. Higher temperatures are possible, provided that the limit is safeguarded by suitable measures (e.g. water tube trap, see Accessories for Pressure Switches / Transmitters) Ambient temperature: -25...70C Ambient temp. limit: at temperatures below 0 °C, ensure that no water condensation can arise in the sensor and in the switching device Switch function/capacity: SPDT Microswitch 250 Vac; capacity 5 A inductive, 8 A resistive Optional functions: add the type numbers below to the listed type numbers for extra functionality as described -301: terminal connection housing, IP65 -307: two microswitches, switching in parallel or in succession, fixed switching interval, terminal connection case, IP65 -217: two microswitches, 1 plug, switching in succession, adjustable switching interval -213: gold-plated contacts, switching capacity: max. 24 Vdc, 100 mA, min. 5 Vdc, 2 mA. And others not available with adjustable switching difference. -351: protection class IP65 and switching housing with surface protection (chemical version) -513: gold-plated contacts, switching differential permanent, IP65, switching capacity: max. 24 Vdc, 100 mA, min. 5 Vdc, 2 mA; suitable isolating switching amplifier necessary, degree of protection Ex-i Certificates: SIL 2 according IEC 61508-2