... year's experience 3.apply to air compressor WHZD-25A smart motor protector Main Function 1,Protect function:Overload,phase failuer ... ,Ambi ent temperature:-10°C~+40°C,relative humidity:notmore than 50%,relative higher humidity is allowed in lower temperature ≤90%3 ... dot comTHANK YOU FOR YOUR VISITING! NEW DESIGN!! WHZD-25A smart motor protector(CCC&CE&ISO9001)