Limit Thermostat- 1/2" disc diameter - Manual Rollout, (240F) - Cut out at 240F. Manual reset. For use on furnaces, dryers, fans, dishwashers, heaters, package units, limits, ect., U.L.Rated, #RL240. These limit thermostats are brand new and made by Napco US Corp.

Picture is RL220 but listing is for RL240.