RS PRO Panel Mount Continuous Internal Piezo Buzzer, 102 dB Need a high-volume alert to sound when a secure door is open or a piece of equipment is in operation? Choose this internal piezo buzzer from RS PRO. It emits a continuous tone of up to 102 decibels (dB) when triggered, making it similar in sound level to a car horn. You can install this buzzer directly onto your printed circuit board (PCB). It also has flanges for screw mounting, giving you more versatility in installation. The buzzer's minimum operating temperature of -30°C means it's ideal as an alarm to indicate when a freezer door is open. The buzzer housing is made from durable and hard-wearing acrylonitrile butadiene styrene (ABS), so it will stand up to harsh environments over a long product life. This kind of buzzer is frequently used as an alarm for apartment block secure doors or farmyard gates and in factory automation. Features and Benefits - Dimensions of 41.8 (diameter) x 59.5 (length) x 22 mm (height) - Internal drive type - Maximum frequency of 3.3 kHz - Minimum frequency of 2300 Hz - Maximum operating temperature of +85°C - Minimum operating temperature of -30°C - Maximum supply voltage of 16 V DC - Minimum supply voltage of 3 V DC - Panel mounting type - Sound level of 102 dB - Supply current of 40 mA - Continuous tone type