Permanent magnetism direct current motor drive. Standard travel:100 150 200 250 300 350 400mm special itinerary can be designed by demands from customers. Non-load velocity:6.5/m, Rated load velocity:4.5/m Work cycle approach:10%. Ambient temperature:-5 to +40 degrees,standard protection of level:IP 54 buit-in limit switch,but be nonadjustable after our of factory. Uitra low noise design,the noise below 48dB(a);Testing method by DS/EN is03746,electrical machine no load. Applications:household electric beds,electric bed for medical use,dental chair wheelchair,industrial machinery,etc.