Home / Products / Hazardous Rated / Valves / Transmitters Transmitters 1 to 6 switch outputs for 14 varieties including sealed switches and high current switches. Applications include rotary or linear valve indication and industrial damper position monitoring. Compact. Series Mark Flexible Design, Ideal for Corrosive EnvironmentsPosition Indicator/Switch/Transmitter which features a magnetic coupling and has a flexible design. Weatherproof, explosion-proof, and submersible. Series QV Ultra-Low Cost, Compact, Backlit, Corrosion ResistantQUICK-VIEW® Valve Position Indicator/Switch is produced from Proximity with up to four individual mechanical or proximity switches. Available with optional backlighting.