Water heater

A water heater, comprising a shell and an anti-electric wall, wherein a heater is disposed in the shell, two ends of the heater communicate with connecting pipes, ends of the connecting pipes respectively communicate with a water outlet pipe and a water inlet pipe, the anti-electric wall is disposed inside or outside the shell, the anti-electric wall comprises a mounting shell, the mounting shell and the water inlet pipe are arranged integrally, a folded water flow channel is disposed in the mounting shell, a water flow, after heated by the heater, enters the folded water flow channel and then flows out, the heater is mounted with an overheat protector for monitoring temperature of the heater, a resetting button is disposed on the overheat protector, when the temperature of the heater is excessively high, the resetting button pops out to power off the heater, the shell is provided with an insertion hole, the insertion hole corresponds in position to the resetting button, after the heater cools down and is restored, a non-metallic object is inserted into the insertion hole to press the resetting button for resetting, a resetting shell is integrally disposed in the shell, a resetting cavity is provided in the resetting shell, the insertion hole communicates with the resetting cavity, the resetting button extends into the resetting cavity, when the resetting button needs to be pressed for resetting, the non-metallic object is used to extend into the resetting cavity to toggle the resetting button, a water flow rotor is mounted in the connecting pipe of the water outlet pipe and/or the water inlet pipe, a mounting groove is provided on a pipe wall of the water outlet pipe, a hall sensor is inserted into the mounting groove, a control assembly is mounted in the shell, and the control assembly is electrically connected to the heater and the hall sensor.