SMD buzzers, electromagnetic buzzer high SPL, good reliability, 8.5*3.6mm, 2731Hz,2V-5V Tape on reel, RoHS, SMD buzzers, Electromagnetic transducerDimension: 8.5*8.5*3.6mmResonant Frequency: 2731HzRated voltage: 3.0VSPL: 85DdBPacking: T.O.RVarious dimension available, such as12*12*2.5,16*16*2.5,10*10*2etc. Electro-magnet Buzzer DMST8503F27