MT4-12/24-R is a red, multitone horn

The MT4-12/24-R is a red, multitone horn, or horn strobe, manufactured by Eaton's Wheelock brand, used in fire alarm systems for audible and visual alerts. It operates on a dual voltage input of 12V or 24V DC, offers a choice of eight different alarm tones that can be selected in the field, and has a high and standard sound output level option. This unit is UL Listed, suitable for indoor and outdoor use with the correct backbox, and can be surface or flush mounted. Key Features Manufacturer: Eaton Wheelock Product Type: Multitone Horn (or Horn Strobe) Color: Red Voltage: 12/24 VDC (field selectable) Audible Features: Field-selectable tones (eight options) Field-selectable sound output level (High/Standard) Visual Features (for horn strobe versions): Designed for compatibility with Wheelock synchronization modules. Mounting: Surface or flush mountable to standard electrical hardware. Application: Suitable for fire protective service and general signaling service. Approvals: UL Listed. Compatibility: Features a DC blocking capacitor for compatibility with Fire Alarm Control Panels (FACPs).