Sound & Signal Devices suppliers in India

About sound & signal devices

Sound and signal devices give a machine or circuit its voice. The everyday example is the buzzer, found in microwave ovens, UPS units, reversing alarms, security panels and timers. Piezo buzzers are thin and draw little current, while magnetic types give a lower tone at small sizes. Active buzzers sound as soon as DC power is applied; passive ones need a driving signal and can play different tones. Buyers compare operating voltage, sound pressure level in dB at a stated distance, resonant frequency, body diameter and whether the part mounts on a PCB, a panel or with wire leads.