... the temparature control, illumination, timing, etc. Applicable Scope: LTD-125(B) Lighting box is used in the refrigerator,freezer and congealer ... door switch control,etc.Temperature control range: Designed temperature range:-36~+15CTemperature regulate range:Max.15W ON/OFF temperaturedifference:4~16CPower ... ~4A 0.45 1~24A 0.5~16A LTD-125(B)