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s SimplEx <br />Audible Notification Appliances Speakers, 25 or 70.7 VRMS, Wall or Ceiling Mount <br />Speaker sound output specifications <br />Table 7: Sound output ratings at 10 ft (-3 m) per UL 1480 Reverberant Chamber Testing <br />Model <br />Type <br />Input voltage <br />Selected tap <br />1/4W <br />1/2W <br />1 W <br />2W <br />4902-9716 <br />4902-9717 <br />Rectangular housing <br />25 VRMS <br />80 dBA <br />83 dBA <br />85 dBA <br />88 dBA <br />70.7 VRMS <br />79 dBA <br />82 dBA <br />85 dBA <br />88 dBA <br />4902-9721 <br />Round housing <br />25 VRMS or 70.7 VRMS <br />79 dBA <br />82 dBA <br />85 dBA <br />88 dBA <br />4902-9722 <br />Table 8: Sound output ratings at 3 m (-10 ft) per ULC S541 Anechoic Chamber Testing <br />Selected tap <br />Model <br />Type <br />Input voltage <br />1/4W <br />1/2W <br />1 W <br />12W <br />4902-9716CACA <br />Rectangular housing <br />25 VRMS or 70.7 VRMS <br />77 dBA <br />80 dBA <br />83 dBA <br />86 dBA <br />4902-9717CA <br />4902-9721 CA <br />Round housing <br />25 VRMS or 70.7 VRMS <br />79 dBA <br />82 dBA <br />85 dBA <br />89 dBA <br />Table 9: Speaker polar dispersion reference (per ULC S541 Anechoic Chamber Testing) <br />-6 dB 155° <br />4905-9931 Adapter plate installation reference <br />Ada <br />Optic <br />Wire Gu <br />(shown here <br />reference only, <br />be used on of <br />mounting optic <br />Box <br />bly <br />Figure 7: 4905-9931 Adapter plate installation reference <br />Note: Figure 7 shows: <br />4905-9931 adapter plate <br />2975-9145 back box <br />4905-9999 Optional wire guard <br />El <br />Adapter Plate <br />Page 7 S4902-0003 Rev.11 09/2021 <br />