Mircom MH-25 Series Piezoelectric Mini Horns Owner’s Manual
- June 9, 2024
- Mircom
Table of Contents
Mircom MH-25 Series Piezoelectric Mini Horns
Description
Mircom’s MH-25 Series mini horns are compact electronic alarm appliances that
are ideal for alarm signalling in individual rooms, apartments, hotels and
offices where attractive appearance and dependable performance are prime
concerns. When activated, the MH-25 Series mini-horns produce a high sound
output of over 90 dBA at 10 feet with a minimum current draw of 15.5 milliamps
at 24 VDC (unfiltered) on the non silenceable models. Designed as alert or
alarm signal appliances for use with any conventional Fire Alarm Control
panel, the MH-Series mini horns are available in a standard version (MH-25)
and a Silenceable version (MH-S25).
The MH-S25 versions are silenceable mini horns equipped with a “Silence” push
button and a red LED to indicate “active signal circuit” when lit. The push
button allows the user to silence the mini-horn for a maximum of 10 minutes
upon which the mini-horn will sound again until the signal circuit is inactive
or the mini horn is silenced again or the fire alarm panel is reset. Upon the
fire alarm being reset, it takes approximately 25 seconds for the MH-S25 Mini-
Horns to reset.
All MH-25 Series mini horns are designed for easy installation with convenient
mounting to standard single gang boxes and in-out wire leads for fast
connection. The front face plates are ruggedly constructed of high impact
thermoplastic and are available in fire alarm red or off-white to blend with
any room decor.
Features
- High sound output for enhanced audibility (over 90 dBA at 10 feet) @ 24VDC
- “Silence” push button and red LED to indicate “active signal circuit” on MH-S25 versions
- 24 VDC models with wide listed voltage range, filtered DC (Non Silenceable only)
- Polarized inputs for compatibility with standard reverse polarity supervision of circuit wiring by an alarm panel
- Mounts into standard single gang box
- Flush or surface mounting options
- Compatible with sensitive detection and communication circuits
- Available in red or off-white finish
Installation Instructions
MH-25 Mini-Horn
Note: The MH-25 Series mini-horns are compatible with the CSIS-202 and CNSIS-204 Conventional Signal Isolator Modules. Please refer to Cat. Sheet
5223 and #5224.
Specifications
MH-25R / MH-25W
Rated Voltage| 16-33VDC
Regulated 24Vdc/fwr
---|---
Rated Current| 45 mA
Overall Sound Pressure Level (dBA, anechoic)| TONE| @16 V| @33 V
Contiuous| 81| 87
Temporal (via (FACP)| 82| 89
Directional Characteristic (represents both horizontal and vertical
axes)| ****
ANGLE
| ****
OSPL (dBA)
0º (on axis)
-90º & 90º
| 0 (trg)
-3
Sound Level in the indoor installation may vary depending upon the space
surroundings
Devices are intented for dwelling use ONLY
Mircom does not recommend any changes to the factory applied finish
Operating temperature: -20ºC ~ +60ºC (-4ºF ~ +140ºF) Plate: A.B.S
Color Selection: Red/White
Weight: 2.2 oz (63g)
Two #6-32 screws provided
MH-S25R / MH-S25W
Rated Voltage| 16-33VDC
Regulated 24Vdc/fwr
---|---
Rated Current| 62 mA
Overall Sound Pressure Level (dBA, anechoic)| TONE| @16 V| @33 V
Contiuous| 78| 82
Temporal (via (FACP)| 83| 86
Directional Characteristic (represents both horizontal and vertical
axes)| ****
ANGLE
| ****
OSPL (dBA)
0º (on axis)
-90º & 90º
| 0 (ref)
-3
Sound Level in the indoor installation may vary depending upon the space
surroundings
Devices are intented for dwelling use ONLY
Mircom does not recommend any changes to the factory applied finish
Operating temperature: -20ºC ~ +60ºC (-4ºF ~ +140ºF) Current: 15.5mA STBY
Typical Wiring Diagrams
MH-25 Mini-Horn
THIS INFORMATION IS FOR MARKETING PURPOSES ONLY AND NOT INTENDED TO DESCRIBE THE PRODUCTS TECHNICALLY.
Ordering Information
| Model | Description | Colour | Approval Listings |
|---|---|---|---|
| MH-25R | Mini-Piezo | Red | UL, ULC, CSFM, MEA |
| MH-25W | Mini-Piezo | White | UL, ULC, CSFM, MEA |
| MH-S25RA | Silenceable Mini-Piezo | Red | ULC |
| MH-S25WA | Silenceable Mini-Piezo | White | ULC |
Canada
25 Interchange Way Vaughan, Ontario L4K 5W3 Telephone:
905-660-4655 Fax:
905-660-4113
Website: www.mircom.com
U.S.A.
4575 Witmer Industrial Estates Niagara Falls, NY 14305
Toll Free: 888-660-4655 Fax Toll-Free:
888-660-4113
Email: [email protected]
THIS INFORMATION IS FOR MARKETING PURPOSES ONLY AND NOT INTENDED TO
DESCRIBE THE PRODUCTS TECHNICALLY.
For complete and accurate technical information relating to performance,
installation, testing and certification, refer to technical literature. This
document contains intellectual property of Mircom. The information is subject
to change by Mircom without notice. Mircom does not represent or warrant
correctness or completeness.