Spesifikasi: Size: 6" (inch) Approved for indoor and outdoor use Low current draw High dB output Available in six-inch, eight-inch, and ten-inch sizes DC models polarized for use with supervision circuitry Mount directly to standard four-inch square electrical box indoors Operating Temperature Range: 31F to 140F Operating Voltage SSM series: 24 VDC Operating Voltage Limit: 16 to 33VDC Maximum Current: DC-31.1 mA/ FWR-53.5 mA Sound Output (dBA): 82 UL/FM