Product Details:
Amseco surface mount fire alarm speaker. Red enameled steel. Model #: 8168-038. Made for ADT, UL listed. Input voltage: 70.7v @ 1000 Hz. Input power: 1/2w (10k ohm), Impedance: 1w (5k ohm), 2w (2.5k ohm). Frequency range: 400 - 4000 Hz. Low frequency cut-off: 200 Hz. 4-1/2" square, 3.25" depth. NOTE: Requires 4" electric box with over 2" (50mm) depth for mounting (not included).

Product PDFs: