... Replace conventional switches , replacing mechanical buttons with touch screen , longer life.l LED backlight touch buttons for switch control,address code of ... .5W ;ambient temperature: -10~50°Cl Two-way communication up time ≤ 2s Installation: For the lamp which you want to control ... provide DNJ,EMS,DHL ,TNT for shipping method.3.Delivery time:EMS,UPS,DHL,Fedex and TNT express shipping usually take ...