The invention relates to a coolant dosing device for the application of cryogenic gas for producing low temperatures as required e. The faecal management device is placed on a wearer, in combination with an applicator. A user may rotate the audio plug to control operations such as media playback operations, menu selection operations, and other activities in the electronic device. Once the phase ambiguity is removed, the code, timing, and power level may be determined relatively quickly. A toothed bar and pawl may be provided to retain the instrument in a squeezed state. Excess heat is optionally used to produce steam, which powers a turbine, which powers an electrical generator.