Description

The Siemens U-MHU is a commercial electronic horn designed for indoor fire alarm notification systems. It provides dependable audible notification with both synchronized and non synchronized operating modes, allowing flexible installation in new or existing fire alarm systems.

The horn features a red low profile housing, universal mounting, field selectable temporal or continuous tone operation, and efficient low current electronics. Its rugged construction and reliable performance make it suitable for commercial, institutional, healthcare, educational, and industrial fire alarm applications.

Product Functions

• Provides audible fire alarm notification
• Supports synchronized operation
• Supports non synchronized operation
• Produces Temporal Code 3 alarm signal
• Produces continuous horn signal
• Operates from regulated notification appliance circuits
• Provides high output audible signaling
• Supports reverse polarity supervision

Electrical & System Information

The U-MHU operates from regulated notification appliance circuits and supports either synchronized or non synchronized operation depending on system configuration. The horn provides field selectable continuous or Temporal Code 3 audible operation while maintaining low current consumption.

The appliance includes screw terminal wiring connections for simplified installation and supports reverse polarity supervision for commercial fire alarm notification circuits.

Features

• Electronic horn
• Red housing
• Universal mount
• Sync operation
• Non sync operation
• Temporal Code 3 tone
• Continuous tone
• High sound output
• Low current consumption
• Indoor installation
• Reverse polarity supervision
• Screw terminal wiring
• Low profile design
• Commercial fire alarm application

Mounting & Design

The U-MHU is designed for universal mounting on standard electrical boxes. Its compact low profile housing allows quick installation while maintaining a clean finished appearance in commercial buildings.

The concealed mounting hardware provides a professional appearance while allowing convenient servicing and replacement when required.

Protection & Applications

Suitable for:

• Commercial Fire Alarm Systems
• Office Buildings
• Schools and Universities
• Hospitals
• Healthcare Facilities
• Hotels
• Government Buildings
• Industrial Facilities
• Warehouses
• Apartment Buildings
• Institutional Facilities
• Indoor Notification Systems

Technical Specifications

Manufacturer: Siemens

Part Number: 500-699594

Model: U-MHU

Product Type: Electronic Horn

Notification Type: Audible

Operation: Sync and Non Sync

Tone Selection: Temporal Code 3 or Continuous

Housing Color: Red

Mounting: Universal Mount

Wiring: Screw Terminal Connections

Application: Indoor Commercial Fire Alarm Systems

Supervision: Reverse Polarity Compatible

Listings: UL Listed, ULC Listed, FM Approved, and CSFM Listed. Verify product labeling, installation instructions, local codes, and project requirements before installation.

Applications

The Siemens U-MHU is designed for commercial fire alarm systems requiring dependable audible notification with synchronized or non synchronized operation. Typical applications include office buildings, hospitals, schools, universities, hotels, warehouses, industrial facilities, government buildings, apartment buildings, and other commercial occupancies requiring reliable indoor audible fire alarm notification.

U-MHU Datasheet