Protect your home against fire in smoky rooms with the Smartwares Heat Detector. The heat detector warns you of fire-prone situations where an optical smoke alarm can not do this, such as the kitchen. The heat detector gives a loud signal of 94 decibels, so that you definitely hear it above the hood. The detector works on batteries and attaches to the ceiling without electrical installation. By means of a beep the heat detector informs you when the battery needs to be replaced.