CPG Signals Model ASHP PowerTone Amplified Speaker produces a crisp, clear, high-decibel tone. The tone may be generated by the PowerTone Signaling System by a compact, solid-state, plug-in card. The speaker cone and projector are of spun aluminum. The circuitry and tone card are contained in dust and moisture proof sealed housing of die-cast aluminum. An internal gain control allows for volume adjustment. The amplified speaker is NEMA 3 rated, and is finished in red enamel. Model ASHP Amplified Speakers operate at 24 VDC and are polarized for connection to system supervised alarm notification circuits. The ASHP is also available in a 120 VAC model. CPG model V1971 synchronized strobe lights are available as an option when visual signaling is required. Strobes can be synchronized using Model VSYNC sync module. Both the speaker and strobe are listed for indoor and outdoor use.