... both mV value and temp.* Pen type ORP meter, all in one, pH electrode is included, easy for general purpose application* ... without any operations after 10 mins* Easy to change the electrode* Compact size, light weight* Temperature measurement, ,* Power ... RHDimension188 x 38 mm (included electrode)Auto Power offAuto power shut off to save battery lifeWeight82 g (included electrode) MINI orp meter