General
System Sensor's SSM Series alarm bells are low-current, high-decibel notification appliances for use in fire and burglary systems or other signaling applications. They come pre-wired to reduce installation time, and also incorporate a polarized electrical design for use with supervision circuitry.
With reliable performance, SSM Series alarm bells provide loud, resonant tones. They operate on 24 VDC and are motor-driven.
SSM Series alarm bells offer simplified installation. For indoor use, SSM Series alarm bells mount to a standard 4" (10.16 cm) square electrical box. For outdoor applications, a WBB weatherproof backbox is used.
Features
• Approved for indoor or outdoor (with WBB backbox) use.
• Low current draw.
• High dB output.
• Three sizes available: 6" (15.24 cm), 8" (20.32 cm), and
10" (25.40 cm) diameter.
• 24 VDC models; polarized for use with supervision circuitry.
• Bells mount directly to standard 4" (10.16 cm) square electrical box.
Specifications
Regulated voltage:
24 VDC.
Operating voltage range:
16 to 33 VDC.
Maximum Current:
DC 31.1 mA/FWR - 53.5 mA.
Operating temperature range:
-31°F (-35°C) to +150°F (+66°C).
Termination:
provided with two sets of leads for in/out wiring.
Service use:
Fire Alarm, General Signaling, Burglar Alarm.
Engineering and Architectural Specifications
Model shall be a SSM Series alarm bell. Bells shall have underdome strikers and operating mechanisms. Gongs on said bell shall be no smaller than nominal 6" (15.24 cm), 8" (20.32 cm), or 10" (25.40 cm) (specify size) with an operating voltage of 24 VDC. Bells shall be suitable for surface or semiflush mounting. Outdoor surface-mounted installations shall be weatherproof (using optional WBB weatherproof backbox);
otherwise, bells shall mount to a standard 4" (10.16 cm) square electrical box having a minimum projection of 2.5" (6.35 cm). Bells shall be located as shown on the installation drawings or as determined by the Authority Having Jurisdiction. Bells shall be Listed for indoor/outdoor use by Underwriters Laboratories, ULC (Canada), and the California State Fire Marshal, and approved by Factory Mutual and MEA.
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Electrical Specifications
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Model
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Gong Diameter
(inches)
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Nominal Voltage
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Operating Voltage
Limit
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Maximum Current
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Sound Output (dBA)
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SSM24-6
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6
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Regulated 24VDC
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16 to 33VDC
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DC-31.1mA/ FWR-53.5mA
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82
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SSM24-8
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8
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Regulated 24VDC
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16 to 33VDC
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DC-31.1mA/ FWR-53.5mA
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80
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SSM24-10
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10
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Regulated 24VDC
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16 to 33VDC
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DC-31.1mA/ FWR-53.5mA
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81
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SSV120-6
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6
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Regulated 120VAC
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96 to 132VAC
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53mA
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85
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SSV120-8
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8
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Regulated 120VAC
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96 to 132VAC
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53mA
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82
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SSV120-10
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10
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Regulated 120VAC
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96 to 132VAC
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53mA
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82
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* Sound output measured at Underwriter Laboratories, as specified in UL464
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Ordering Information
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UL/FM Model No.
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ULC/Canadian Model No.
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Description
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SSM24-6
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SSM24-6A
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Bell, 6˝, 24VDC, Polarized, 82dBA
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SSM24-8
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SSM24-8A
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Bell, 8˝, 24VDC, Polarized, 80dBA
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SSM24-10
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SSM24-10A
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Bell, 10˝, 24VDC, Polarized, 81dBA
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SSV120-6
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SSV120-6A
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Bell, 6˝, 120VAC, 85dBA
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SSV120-8
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SSV120-8A
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Bell, 8˝, 120VAC, 82dBA
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SSV120-10
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SSV120-10A
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Bell, 10˝, 120VAC, 82dBA
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WBB
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Weatherproof back box for SSM and SSV series, when installed outdoors
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