Control the water temperature. If the water pressure is not reached or the water pressure is over the high temperature controller can play a protective role. The electric water heater temperature controller circuit consists of a power supply circuit, a leakage protection circuit, a temperature control circuit, a water level indication and an anti-dry circuit to form a complete temperature control system. The electric water heater is heated and not heated after the thermostat is turned on and off. After the circuit is connected, the thermostat is automatically turned on and the water heater begin heating. When the water temperature reaches the preset temperature of the water heater, the thermostat is disconnected, and the water heater stops heating. Temperature Control Switch only, accessories demo in the picture is not included! Action Temperature:30-80 Degrees Celsius Overtemperature Protection Temperature:95 +/- 5 Degrees Celsius Electric Strength:AC 50 Hz 1800V Last Not Breakdown Insulation Resistance: 500 M or Higher Big Motion Life: 100000 Times Bimetallic Strip Action: 1000 Times Connection Socket Is 4 +/- 0.1. Straight Rod Diameter is 6 +/- 0.1 Specification:middle pole 21.7cm Color:As Shown Material:Metal + Brass Package Contents: 1 * Plug-in Push Thermostat Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.