The Edwards 757-7A-RS25W is a 15/75-candela re-entrant speaker-strobe in white, designed for 25 V fire-alarm audio risers. Specifically, it is part of the Integrity 757 Series, which uses a compression-driver re-entrant speaker for higher output than cone-type models. As a result, you get a louder voice and tone signal in the same housing footprint.
First, the 757-7A-RS25W carries a compression driver with an 8-ohm voice coil and sealed 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.
Dual Candela Strobe Rating
Furthermore, the -7A strobe carries two candela ratings. Specifically, it is UL 1971-listed at 15 cd wall mount and 15 cd ceiling mount. In addition, it is UL 1638 / ULC S526-listed at 75 cd as a protective visual signaling appliance. As a result, a single appliance covers both public-mode (UL 1971, hearing-impaired) and private-mode (UL 1638, on-axis high-output) applications.
Also, the LSC product title note about “75 cd on-axis per ADA/UL 1638” is correct — the 75 cd value is the UL 1638 rating, not a separate UL 1971 rating. Therefore, designers should use the 15 cd value for UL 1971 hearing-impaired notification spacing.
Wattage Taps and Sound Output
Furthermore, the 757-7A-RS25W is field-selectable for 2, 4, 8, or 15 watt operation. As a result, the installer can balance output against branch loading without changing devices.
Specifically, the speaker-strobe dBA output per tap (UL 1480 reverberation room) is:
- 2 W — 87 dBA
- 4 W — 90 dBA
- 8 W — 95 dBA (UL 1480 average 91.8 dBA)
- 15 W — 98 dBA (UL 1480 average 94.1 dBA)
Synchronized Flash
Also, the 757-7A-RS25W 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, SIGA-CC2A, SIGA-MCC2A, BPS6A, BPS10A, APS6A, APS10A, and Fireshield Plus 3/5/10-zone panels.
Cold-Weather Strobe Output
Specifically, the -7A series is rated 17.7 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 757A-WB 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): 15 cd (UL 1971)
- Strobe rating (ceiling): 15 cd (UL 1971)
- UL 1638 / ULC S526 rating: 75 cd
- Speaker driver: Re-entrant compression driver, 8-ohm voice coil, sealed construction
- Speaker voltage: 25 VRMS
- Speaker taps: 2, 4, 8, 15 W
- Strobe voltage: 16–33 VDC continuous
- Strobe current (15/75 cd): 90 mA @ 24 VDC typical / 150 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 757-7A-RS25)
- Lens: Clear LEXAN; ships with LKW-1 “FIRE” wall-mount markings
- Wire connections: Speaker terminals up to #12 AWG; strobe 6-inch color-coded wire leads
- Operating environment (indoor): -31 to 150°F (-35 to 66°C), 85% RH @ 30°C
- Operating environment (outdoor, w/ 757A-WB): -31 to 150°F (-35 to 66°C), 95% RH @ 60°C
- Cold-weather strobe output: 17.7 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 757-7A-RS25W flush-mounts to the Edwards 960A-4SF flush box. Therefore, no separate trim plate is required. Also, surface and weatherproof mounting use Edwards’s color-matched accessory boxes:
- 757A-SBW — indoor surface box, white
- 757A-WBW — weatherproof outdoor surface box, white
- 757A-BDFW — bi-directional mounting frame, white
Lens Markings
However, 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 757-7A-RS25W
To order the Edwards 757-7A-RS25W, 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
Additional information
| Weight | 4 lbs |
|---|---|
| Dimensions | 7 × 6 × 6 in |
| Condition | New |
| Manufacturers | Edwards |
| Part Type | Strobe |
