10 PCS THDZ-2445 Active Buzzer [4KHz]

ِِِِِِDescription:
THDZ-2445 Active Buzzer [4KHz]  beeps at a predefined frequency (4000±500Hz) on its own even when you just apply steady DC power. You can still produce a sound from the buzzer connected to a microcontroller, such as an Arduino, by just driving a standard high output on the connected pin, so you don't need to use processing power, hardware timers, or additional code to produce sound.

Features:
Rated Voltage (Square Wave): 12Vp-p
Operating voltage: 1~30Vp-p
Rated Current (MAX): 5mA
Sound Pressure Level (SPL): 80dB (at 10Cm)
Resonant Frequency: 4KHz
Operating Temperature: -20°C ~ +60°C
Diameter: 24mm
Thickness: 4.5mm

Package Include:
10 x THDZ-2445 Buzzer