EFFICIENT TEMPERATURE REGULATION: The thermostat assembly ensures the water temperature does not rise above 140 (60 ), with an ECO display of 180 (82 ) and a thermal cutoff fuse display of 208 (99 ) water heater parts.The RV water heater thermal cutoff kit can effectively regulate the water temperature of the RV, ensuring comfortable and safe water temperature. EASY TO INSTALLATION: The RV water heater cutoff kit includes detailed instructions, simply place thermostat in the right cutout and the ECO in the left, replace spring and washer, cover with black foam cover, and reconnect brown wires to thermostat and red wires to ECO. BROAD COMPATIBILITY: The RV water heater parts are compatible with a wide range of RV water heater, for 21140, 9-72153, Mercury 45518A2, 45518A3, 45518A1, GCH6-, GH6-8E, G6A-6E, G6A-7E, G6A-8E, GC6AA-7E, GC6AA-8E, GC6AA-10E, GCH10A-2E, GCH10A-, G10-2E, XT Series, etc. Colour:Photo Color Material:Plastic Package Contents: 1x RV Water Heater Thermal Cutoff Kit 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.