Federal Signal SelecTone Audible Signaling Device, Series: 300GCX, 50/60 Hz, 110 dB, Specifications Met: CSFM Approved, cUL Listed, UL 1480, Surface Mount, Specifications: 0.1 A, 240 VAC, -67 to 150 deg F, Die Cast Aluminum, Gray, 7.9 in W x 8.5 in D x 12.4 in H