Auf200 series measure flow or energy of water running in heatingcooling pipe by temperature sensor based on ultrasonic flowmeter. Its simple, easy to install and battery powered, no need of external power. It can display flow rate, total flow, total heat, total cool, heat power and supplyreturn temperature etc. Featuresdisplay flow rate, total flow, heating and cooling energy3.6v battery power, continuous working for 6 yearsauto turn off lcd if no operation within 3 minutes, saving powersupply or return alternatively for mountingdisplayer 270o rotationalmedium temperature up to 105 oc, dt 0-80 octhreaded connection, easy for installationm-bus communication, easy for remote control and readingresponse time 6 years (3800ma)record cycle:18 monthsprotection class:ip65communication:m-bus (optional)communicator:m-bus private communicatoraccessory:coupling x 1 pair, ball valve with temperature sensor hole, m-bus private communicator