Bought this meter to replace another manufacturer's meter that performed poorly. All components necessary to do the job, except hookup wire, are included and of good quality. Of course, if you need a special adapter for the temp. sensor other than the usuals, then you may have to get an additional adaptor. The meter is easy to read, night and day, and appears to be accurate. If the example I got is representative of the lot, then it is a good add-on temperature meter.