Types of twin thermostats Type Dimensions (HxWxD) Rated voltage cURus EAC CE UKCA │FLZ 541 80,5 x 59 x 38 mm AC / DC │FLZ 542 │FLZ 543 available in preparation optional Download the new PSS software Thermal management FilterfansAir/air heat exchangersCooling unitsAir/water heat exchangersHeatersThermostatsTwin thermostatsHygrostats/Thermostats-hygrostatsEnclosure accessories Signaling technology Visual signalingAudible signalingCombined signalingSignal towersEx-ATEX signalingObstacle lightsDevices with M12 connectorArt IlluminationAccessories Liquid Cooling CCE 1,1–6,5 kWPC 2500 2,5 kWEB 2.0 3,2–16 kWEB 2.0 L 21-44 kWEB XT 36–150 kWOptions Service & Support Technical servicesDownload centreSoftware and dataSupplier release lists Solutions IndustriesEnvironmental conditionsCertifications Pfannenberg GmbH Werner-Witt-Straße 121035 Hamburg