Drop Elf is a light smart shower thermostat. It is equipped with a smart water-saving module with cold water pre-discharge and water pause functions, saving users the unpleasantness of having to wait for hot water, as well as saving water resources. Drop Elf features a pressurized water function for hand showers and overhead showers, solving problems caused by insufficient water pressure and making the shower experience more comfortable. The flat top of the thermostat meets basic shelf needs.