Honeywell s Piezo Dynamic PD WAVE2PD Sirens produce traditional speaker sound while drawing 1/4 the current of typical sirens. This allows multiple devices to be installed on the same alarm panel without the need for additional hardware, costs and labor. The siren features a sleek, lightweight design, an easy to wire terminal block and a hinged case cover. The WAVE2PD Sirens are globally compliant and UL approved and ideal for residential application.