Passive Buzzer 12MMx8.5MM 

Name:12085 Passive BuzzerDiameter :12mm
Height :8.5mm
42R 12085 3V-12V Common

High Decibel Buzzer SFM-20B DC 3-24V

Rated voltage: 12V
Voltage range: 3-24V
Current consumption: 12mA
Sound pressure: 87dB
Resonant frequency: 3300±500Hz
Working temperature; -20~ +60℃
Storage temperature; -30~+70℃Straight: 23MM
Height: 11MM
Hole distance: 30MM

Intermittent Beep High-decibel DC 3-24V

Color: White
Alarm Diameter: 29mm / 1.14"
Alarm Height: 15mm / 0.59"
2 Mounting Holes distance: 40mm / 1.57"
2 Wires length: 105mm / 4.13"
Rated Voltage: 12V
Operating Voltage: 3-24V
Rated Current(MAX): 20mA
Min Sound Output at 10 cm: 95 DB
Resonant Frequency: 3100±500
Operating Temperature: -20～+80°

Alarm Buzzer DC 12V 85dB

12V 85dB Mini Electronic Alarm Buzzers
Rated voltage  12VDC
Operating voltage  8V~15V
Rated current 25mA
Rated frequency 400±100HZ
Sound pressure 85dB
Operating temperature -20°C~+60°C
Color Black