Products < Fire Alarms & Sensors < NS/NS4 Series

NS/NS4 Series Horn Strobes & NH Series Horns

Wheelock's new devices, the NS/NS4 Series Horn Strobes and the NH Series Horns (from Notifier for integration with Multicom ICS systems), feature low current design with reduced inrush. The horn devices provide a selectable continuous horn tone or a temporal pattern (Code 3) tone when constant voltage from a Fire Alarm Control Panel (FACP) is applied. Each tone has two dB settings to chose from. All models (horn only or horn with strobe) may be synchronized when used in conjunction with SM or DSM Sync Modules. Additionally, the horn may be silenced while maintaining strobe activation of the NS/NS4 Series horn-strobe devices. All of these features are achievable with either the patented two-wire NS Series or with the four-wire NS4 Series models.

The NS/NS4 Series horn-strobe devices and the NH horn devices are designed for maximum performance, reliability, and cost-effectiveness while meeting or exceeding the latest requirements of NFPA 72 (National Fire Alarm Code), ANSI 117.1 (American National Standard for Accessible and Usable Buildings and Facilities), and UL Standard 1971 (Standard for Signaling Devices for the Hearing Impaired), and UL 464 (Audible Signal Appliances). NS/NS4 audible strobe devices, when properly specified and installed in accordance with NFPA/ANSI standards, can provide the Equivalent Facilitation allowed under ADA Accessibility Guidelines (ADAAG General Section 2.2) by meeting or exceeding the illumination which results from the ADA-specified strobe intensity of 75 candela at 50 feet (15.24 m). This is an illumination of 0.030 lumens per square foot.

When used with the Wheelock SM or DSM Series Sync Modules, the continuous horn tone produces a synchronized temporal (Code 3) tone. This ensures a distinct temporal (Code 3) pattern when two or more horns are within hearing distance. If not synchronized, the temporal sound could overlap and not be distinctive temporal (Code 3) pattern when tow or more horns are within hearing distance. If not synchronized, the temporal sound could overlap and not be distinctive. Additionally, if strobes on the same circuit are synchronized, this provides the ability to comply with ADA recommendations concerning photosensitive epilepsy and to meet NFPA requirements when installing two or more visual devices within the field of view. All of this, plus the ability to silence the horn, is achieved by using only two wires (NS/NH).

Features
• ADA/NFPA/ANSI compliant. Meets OSHA 29 Part 1910.165.
• Low current draw and reduced inrush.
•Wall-mount only.
• Two selectable tones and dB levels: Continuous tone:anechoic,90 or 95 dB;reverberant,82 or 88 dB @ 24 VDC. Temporal Code 3 tone: anechoic, 90 or 95 dB; reverberant, 75 or 82 dB @ 24 VDC.
•Patent pending Universal Mounting Plate for single-gang, double-gang, 4" (10.16 cm) square, or 100 mm European backboxes, or Wheelock's SHBB shallow surface blackbox.
• No additional trim plates required.