3 inch moistureproof sperker, ABS material, zinc coating, take cover after 70-100 - v, 3 w, the technical parameters
Rating: 3 w;
Sensitivity: 90 db + / - 3 db;
The input voltage: 70 v / 100 v;
Frequency response: 130-18000 hz;
Driver: 3 inches;
Product size (mm) : Φ 128 x 85 mm;
Hole size: 100 mm Φ;
Material: ABS;