Mallory Sonalert is a manufacturer of audible signaling devices, including buzzers, speakers, and transducers.

Chime Tone Buzzer, 16-28VDC, 3.3kHz, Panel Mount
Magnetic Indicator, 2-5V DC, 2.3kHz, 12mm Dia, Through Hole
Piezo Buzzer 12VDC 15mA 3.8kHz Through Hole Audio Indicator
Piezo Transducer, 2.9kHz, 120VAC, 80dBA, Panel Mount
Magnetic Transducer, 4-7V, 2.4kHz, 50mA, SMD
Piezo Buzzer 4-7VDC 30mA 2.3kHz 85dBA Through Hole
Piezo Buzzer 1.5-30VDC 12mA 2.5-3.5kHz Through Hole
3-28V DC Piezo Indicator, 3.5kHz, 15mA, 30mm Dia, TH
Piezo Indicator, Radial, 3.15kHz, 12VDC, 25mA
Piezo Transducer 4kHz 15V SMD 10nF
Piezo Buzzer 6-28VDC/VAC, 1.6-2.2kHz, 60dBA, Panel Mount Screw
Piezo Buzzer 60-250V AC/DC, 2.9kHz, 18mA, Panel Mount Screw
5V 2.4kHz 30mA SMT Magnetic Buzzer
Piezo Buzzer 3-15VDC 5mA 4.1kHz 83dBA Through Hole
Piezo Buzzer 3-24VDC 10mA 3.5kHz 95dBA Wire Lead
Piezo Buzzer 6-28VDC 2.9kHz Panel Mount Screw
Piezo Buzzer 3-28VDC 15mA 2.5kHz 90dBA Wire Lead
DC Buzzer 5-15VDC 40mA 100dB 2.5kHz Wire Lead Flange Mount
Piezo Buzzer 5V 30V 1.5mA 4kHz 90dBA Through Hole Radial
Piezo Buzzer 3-20VDC 16mA 3.5kHz 71/86dBA Through Hole
Piezo Buzzer 6-28VDC 11mA 1.9kHz Panel Mount Screw
Piezo Buzzer 6-28VDC/VAC, 2.9kHz, 80dBA, Panel Mount Screw
Piezo Buzzer 6-28VDC/VAC 16mA 2.9kHz Panel Mount Screw
Piezo Transducer 4kHz 25V TH
Piezo Buzzer 6-16VDC 22mA 2.9kHz 80dBA Panel Mount Screw