Parameter: ps-9627h4-01 ps-9627h4-03 ps-9627h4-05 unit
Resonant frequency: 2700 2700 2700 hz
Operating voltage: 1 2 2 4 4 6 v
Rated voltage: 1.5 3.6 5.0 v
Min sound output at 10mm min 85 min 90 min 92 db
Coil resistance: 5.5  15  30
Rated current: 80 80 30 ma
Operating temperatu: -30to+85 -30to+85 -30to+85
Storage temperature: -40to+85 -40to+85 -40to+85
Weight: gram
Housing material: mppo mppo mppo black