I-non-spring return electric damper actuator (ekwabizwa ngokuba "yi-non-spring return" okanye "i-motorized damper actuator") sisixhobo esisetyenziswa kwiinkqubo ze-HVAC ukulawula indawo yokumisa (iipleyiti zokulawula ukuhamba komoya) ngaphandle komatshini owakhelwe ngaphakathi entwasahlobo. Ngokungafaniyo nezixhobo zokubuyisela intwasahlobo, ezixhomekeke kwintwasahlobo ukubuyela kwindawo emiselweyo (umzekelo, ivaliwe) xa amandla elahlekile, ii-activators ezingezizo ezentwasahlobo zibamba indawo yazo yokugqibela xa amandla esikiwe.