Sensitive element with electrically welded stainless steel capsule containing saturated vapor. Base, cover and knob in thermoplastic material. Connection with the user with only 2 wires. Action type 1B. Protection class I. Testing class II. Unit weight 0,14 Kg. Electric featuresSnap action SPDT microswitch with AgNi contacts. Contact rating: 10(2,5)A 250 Vac.