Mechanical buzzer,electronic buzzer,transducer low voltage high SPL. small volume, good reliability, 400Hz,1.5V Mechanical buzzer, transducerSize: 18*14*10mmI>15mAResonant Frequency: 400HzRated voltage: 1.5VOperating Voltage:1.2...3SPL:> 75dB/10cmOperating Temp:-20...70 degreeCwidely used in pest repeller, equipement. mechanical buzzers DMMT1801XF04W50