The utility model discloses a probe, including the probe circuit part, its one or many of can buckling in order to form two or more districts section, just at least wherein has to be formed with the clearance between two district's sections, the first sensor, it sets up in one of them district's section of probe circuit part, the second sensor, it sets up in the another one district section of probe circuit part. The utility model discloses a two probe structures of as an organic wholeization of probe in integrative installation between the erecting stage, are guaranteed that batch production's quality maintenance is unanimous, and then can obviously have been improved off -the -shelf qualification rate to obviously reduced assembly process quantity, save time has reduced manufacturing cost. And combination other part, for example the plug, scaling circuit, serial numbers etc. Will further improve probe's the easy assembling and the maintainability in precision and later stage.