ITEM NAME:1x ACTIVE PIEZO BUZZERS 22mm Mini Electronic Buzzer Sounder Alarm Description: Dimensions: 23x12mm/0.91x0.47inch Operating Voltage: 1.5-15V DC Operating Current: 10mA (max) Sound Output: 85dB at 30cm Suitable for Alarms,Portable equipment,Auto-mobile products, etc. Specification: Product Name: Piezo Buzzer Material: ABS Dimensions: 23x12mm/0.91x0.47inch Wire Length: 110mm/4.33inch Operating Voltage: 1.5-15V DC Operating Current: 10mA (max) Frequency: 5.2kHz  ±0.5 Sound Output: 85dB at 30cm Temp. range: -20℃~60℃ Drive method: Piezoelectric Number of Channels: Dual Channel Package Includes: 1 Piece Electronic Piezo Buzzer Note: Please allow 1-3mm error due to manual measurement. SKU: DMO0013442873006153.1 Piece Electronic Piezo Buzzer. Sound Output: 85dB at 30cm. Number of Channels: Dual Channel. SKU: DMO0013442873006153. Material: ABS. range: -20℃~60℃.