Edwards (757-8A-SS25W) 110 cd speaker/strobe – 25v, white. strobe: meets sleeping area requirement. ul 1971 listed @ 110 cd, inchfire inch wall orientation.

The Edwards 757-8A-SS25W is a 110-candela cone speaker-strobe in white, designed for 25 V fire-alarm audio risers. Specifically, the 110 cd rating meets the recommended intensity for sleeping-area notification per NFPA 72 and UL 1971. As a result, this appliance is the right pick for hotels, dormitories, assisted-living, and other sleeping-room applications.

First, the 757-8A-SS25W carries a 4-inch mylar cone speaker with sealed-back construction. Then a built-in DC blocking capacitor allows the panel to electrically supervise the audio distribution circuit. Therefore, the speaker is correctly supervised on a standard 25 V audio riser.

110 cd Strobe for Sleeping Areas

Furthermore, the integrated strobe is UL 1971-listed at 110 cd wall mount and 60 cd ceiling mount. In addition, it is UL 1638 / ULC S526-listed at 110 cd as a protective visual signaling appliance. As a result, this single appliance handles both public-mode hearing-impaired notification and the higher-intensity sleeping-room recommendation in one device.

Specifically, Edwards recommends that strobes in sleeping rooms be rated at least 110 cd. Therefore, the 757-8A-SS25W meets that recommendation directly without an external lens or shroud.

Wattage Taps and Sound Output

Also, the 757-8A-SS25W is field-selectable for ¼, ½, 1, or 2 watt operation. As a result, the installer can balance output against branch loading without changing devices.

Specifically, the cone speaker-strobe dBA output per tap (UL 1480 method) is:

• ¼ W — 78 dBA
• ½ W — 81 dBA
• 1 W — 84 dBA
• 2 W — 87 dBA

Synchronized Flash

Furthermore, the 757-8A-SS25W synchronizes at one flash per second. As a result, multiple strobes on the same circuit flash together when paired with an external synchronization source. Compatible sync sources include G1M-RM, SIGA-CC1S, SIGA-MCC1S, BPS6A, and BPS10A.

Cold-Weather Strobe Output

Specifically, the -8A series is rated 70.7 cd @ -35°C per UL (and @ -40°C per ULC) for outdoor cold-weather operation. Therefore, the appliance retains useful output across the temperature range when paired with a weatherproof box.

Operating Voltage

Furthermore, the speaker accepts 25 VRMS audio. Then the strobe runs on 16 to 33 VDC continuous (not pulsed). In addition, a diode allows full signal-circuit supervision.

Verified Specifications

• Strobe rating (wall): 110 cd (UL 1971)
• Strobe rating (ceiling): 60 cd (UL 1971)
• UL 1638 / ULC S526 rating: 110 cd
• Speaker driver: 4-inch mylar cone, sealed-back, 8-ohm voice coil
• Speaker voltage: 25 VRMS
• Speaker taps: ¼, ½, 1, 2 W
• Speaker frequency response: 250 to 13,000 Hz
• Strobe voltage: 16–33 VDC continuous
• Strobe current (110 cd): 180 mA @ 24 VDC typical / 329 mA @ 16 VDC RMS UL
• Flash rate: 1 fps synchronized
• Housing: Textured, color-impregnated engineered plastic (exceeds UL 94V-0)
• Color: White (red version is 757-8A-SS25)
• Lens: Clear LEXAN; ships with LKW-1 “FIRE” wall-mount markings
• Wire connections: Separate polarized terminals for speaker and strobe, #12 AWG (2.5 mm²) max
• Operating environment (indoor): 32–120°F (0–49°C), 85% RH @ 30°C
• Cold-weather strobe output: 70.7 cd @ -35°C UL / -40°C ULC
• Listings: UL 1971, UL 1638, UL 1480, ULC S526, ULC S541, MEA, CSFM, FM
• ADA compliant (Code of Federal Regulation Chapter 28 Part 36 Final Rule)

Mounting

Specifically, the 757-8A-SS25W flush-mounts to a standard North-American 4-inch square electrical box, 1½-inch deep, with a 1½-inch extension ring. Therefore, no separate trim plate is required. Also, surface mounting uses Edwards’s color-matched accessory boxes:

• 757A-SBW — indoor surface box, white
• 757A-BDFW — bi-directional mounting frame, white

However, the cone-type SS25W variant is rated for INDOOR use only. Therefore, outdoor or wet-location installations should use the re-entrant RS25 series with a 757A-WBW weatherproof box.

Lens Markings

The unit ships with “FIRE” wall-orientation markings. Therefore, ceiling-mount or alternate-language installations need an LKW or LKC lens kit (e.g., LKC-1 for ceiling “FIRE”, LKW-2 for “FEU”, LKW-3 for bilingual “FIRE/FEU”, LKW-4 for “SMOKE”, LKW-7 for “EMERGENCY”).

Order the Edwards 757-8A-SS25W

To order the Edwards 757-8A-SS25W, call 1-888-557-0558. Alternatively, email sales@lifesafetycom.com.

For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com