Mini-Horns The SpectrAlert® Advance series of mini-horn sounders are designed to simplify installations to provide primary and secondary signaling for fire and security applications. Features The MHR and MHW mini-horns operate at 12 and 24 volts and are ideal for hotel, motel or residential fire system applications, where a smaller notification device is desired. The mini-horns offer high and low volume settings, and temporal or non-temporal tones. The horns can be mounted to single gang back boxes for aesthetically sensitive applications. Synchronization is also provided when using the MDL module. • 12 and 24V operation • High and low volume settings • Temporal and non-temporal tones • Mounts to single gang back box • Compatible with MDL sync module • M echanically and electrically compatible with PA400 series Mini-Alert™ sounders • Listing for ceiling or wall mounting Agency Listings S4011 3028007 CS1099 7135-1653:196 The MHR and MHW mini-horns can operate between 32 and 120 degrees Fahrenheit from a regulated DC or full-wave rectified, unfiltered power supply. They are listed to Underwriter’s Laboratories Standard UL 464 for fire protective signaling systems. SpectrAlert® Advance Mini-Horn Specifications Architectural/Engineering Specifications Mini-horns shall be a System Sensor Model MHR or MHW capable of operating at nominal 12 or 24VDC and shall mount to a deep single gang back box. Mini-horn shall be listed to Underwriter’s Laboratories Standard UL464 for fire protective signaling systems. Mini-horns shall operate between 32 and 120 degrees Fahrenheit from a regulated DC, or full-wave rectified, unfiltered power supply. When used with the Sync•Circuit™ Module, 12-volt rated notification appliance circuit outputs shall operate between nine and 17.5 volts; 24-volt rated notification appliance circuit outputs shall operate between 17 and 33 volts. Physical Specifications Dimensions 4.6˝L × 2.9˝W × .45˝D Weight 2.67 oz. Operating Temperature Range 32°F to 120°F (0°C to 49°C) Mounting Surface: deep single-gang back box (23/4˝ deep) Flush: Standard 4˝ × 4˝ back box with single gang mud ring, which allows sufficient clearance for conduit entrance. Electrical Specifications Input Terminals 12 to 18 AWG Nominal Voltage Regulated 12DC/FWR or regulated 24DC/FWR Operating Voltage 8–33 Operating Voltage with MDL 9–33 UL Sound Output and Current Draw Data Sounder Output (dBA) Switch Setting Pattern Output Level 8–17.5 VDC 1 2 3 High Low High Low 4 Temporal Temporal Nontemporal Nontemporal 68 66 72 8–17.5 VFWR Nominal 12 VDC 67 71 65 69 71 75 Nominal 12 VFWR 70 68 74 16–33 VDC 78 76 80 16–33 VFWR 76 75 79 70 69 72 78 77 73 Sounder Current Draw (mA RMS) Switch Position 1 2 3 4 Sound Pattern Temporal Temporal Non-temporal Non-temporal Volume High Low High Low 8–17.5 Volts DC 12 10 22 17 FWR 10 9 17 13 16–33 Volts DC 17 14 29 21 FWR 15 13 25 19 Ordering Information Part No. MHR MHW Description Mini-Horn, Red Mini-Horn, White 3825 Ohio Avenue • St. Charles, IL 60174 Phone: 800-SENSOR2 • Fax: 630-377-6495 ©2012 System Sensor. Product specifications subject to change without notice. Visit systemsensor.com for current product information, including the latest version of this data sheet. AVDS01500 • 3/12