The KMTG1203 with BUZZER, PIEZO, SMD, 81DB, 5V is an electronic part manufactured by Kingstate. It is a surface-mount device (SMD) type buzzer which gives an audible signal with a continuous 81dB sound at 5 volts. It has a Piezo element which vibrates in response to an electrical signal to generate the sound. This buzzer is small and lightweight, making it suitable for many types of installations. It is a great choice for providing an audible alarm, alert, notification, or other sound reinforcement.