Detailed Product Description Micro processor controlAanced digital signal collectTri-color displayprovide maximum 64 times of 6 level sensitivity adjusttouch key boardReal-time sensitivity adjustbattery voltage indicatedetect R134a,R12,R12 etcDetect all halogen gas leakbuilt-in pump provide positive air flow to sensing tipcordless,use 2"AA"alkaline batteries14"(35.5cm)stainless steel flexible ...