2 : the working time can be set ? usually we can dryer hands in 20s- 25s, so 1mins It's to long and waste energy . Yes. Sure . Some clients will require 20s or 30s . Do as your required. 3 : if i need other color , it's avaliable for us to choose ? Yes . Sure . Add extra price +( 2$ - 15$ based on different type ) 4 : can hand dryer have delay time ? Yes . Delay time can be 1 - 5s as require 5 : sometimes clients feel the sensor distance it's short for induction, so if we needlong sensor distance whether is ok ? Yes . Sure . Sensor distance can be adjust 5 - 18cm as require. Our service 1-- your inquiry will be replied in 24 hours 2--trail order do oem & odm are welcomed 3-- sample : paid by clients , but return back after order confirmed 4-- different voltage & plug , do as requirements in 2- 3 days 5-- best support spare parts in warranty period 6-- good packaging and safe shipping Contact information •contact person : michelle •company : hangzhou wiyi sanitary ware co., ltd •address: no 69, tongyun road, gouzhuang yunhang district hangzhou city, zhejiang province •telephone : 86-15384067512 •fax : 89009512 Website: www.Wzwiyi.Com Carton size : 56.5*33*49.5 cm / 4pcs g.W.: 26kg ; n.W.: 23.5kg..