SEM-36R4.6-8N0.25R

Features: 
Compact size and high sensitivity
Wide bandwidth sound
Excellent for Security and Safety Alarms
Characteristic Minimum Rated Maximum Notes
Type Magnetic
Sound Pressure Level dB at 30cm 89 at rated power and at 30cm
Power W 0.25 0.5
Frequency kHz 0.5 4.5 at SPL 10dB below peak
Available Input Impedance Ω 8 ±15%
Width mm 36 36
Height mm 4
Weight g 9.5
Characteristic Response: 

Dimension Drawing: