Heat Detector BH 1201. For more safety in your house!. For use in the kitchen, garage or in closed rooms where a smoke detector is not suitable because of the formation of steam from cooking, exhaust gases or dust. Short reaction time at a temperature increase to over 55 °C. Warning light and acoustic signal. Function test button. Acoustic signal when the battery is low. 9 V battery included. Height x Diameter: 60 x 130 mm. Signal sound: 85 dB. Battery type: 1 x 9 V.