Specifications Color White​​ Dimensions 6.8" Dia. x 2.9" D ECS/MNS Device Type Speakers​​ Frequency Range 400 to 4000 Hz Location Indoor​​ Maximum Humidity 10 to 93% non-condensing Mounting Ceiling Power ¼, ½, 1, and 2 watts​​ Replacement ​SPCWL Series SpectrAlert Advance Voltage 25 Volts or 70.7 Volts (nominal) Wiring Gauge 12-18 AWG
