The System Sensor SSM24-6 is a 6 inch fire alarm bell provide loud resonant tones. The SSM series operates on 24VDC and are motor driven, while the SSV series operates on 120VAC utilizing a vibrating mechanism.
For indoor use, the System Sensor SSM24-6 mount to a standard four-inch square electrical box. Also, for outdoor applications, weatherproof back box, model number WBB, is used. The SSM and SSV series come pre-wired, to reduce installation time. The SSM series incorporates a polarized electrical design for use with supervision circuitry.
Moreover bells shall have underdome strikers and operating mechanisms. Gongs on said bells shall be no smaller than nominal 6˝/8˝/10˝ (specify size) with an operating voltage of 24VDC or 120VAC (specify by part number). Bells shall be suitable for surface or semi-flush mounting. Outdoor surface mounted installations shall be weatherproof (using optional WBB weatherproof electrical box). Otherwise bells shall mount to a standard 4˝ square electrical box having a maximum projection of 2½˝. In fact, bells shall be located as shown on the drawings or as determined by the Authority Having Jurisdiction. Bells shall be list for indoor/outdoor use by Underwriters Laboratories and the California State Fire Marshal, and approved by Factory Mutual and MEA.
Some of the features and specifications we can describe below, for example:
- Approved for indoor and outdoor use.
- Low current draw.
- High dB output.
- Available in six-inch, eight-inch, and ten-inch sizes.
- AC and DC models.
- SSM and SSV series come pre-wired.