Abstract: An apparatus activates an alarm when the heat and temperature provided by a kiln reach a predetermined level. The apparatus includes a tube extending through the wall of the kiln. An integral mounting surface at the end of the tube inside the kiln provides a surface upon which can rest a pyrometric cone. An elongated member extends through the bore of the tube resting on the pyrometric cone at one end and secured to a pivot point at the other end outside of the kiln. An alarm switch is mechanically coupled to the elongated member. When the elongated member descends because the cone deforms an alarm is activated.

Abstract: An apparatus activates an alarm for a kiln operator when the heat and temperature provided by a kiln reach a predetermined level thereby activating a kiln shut-off weight and switch. The kiln shut-off weight rotates to engage a rod coupled to a switching means for activating an alarm.