Varies ranges : from 0 to 150 mm wc up to 0 to 600 bar differential (dead band) : fixed (within 10% of set value) temperature range : -10 to 80 degree c (for high temperature use of impulse tube is advisable) accuracy : +- 1% to 2% fs no. Of switches : one no. Or, two nos. type of switches : micro switches - spdt sensing element : diaphragm (ptfe or neoprene or ss 316) or piston enclosure : dustproof ip 40, weatherproof to ip 54 ip 65 ip 66, flameproof