CERBERUS PYROTRONICS

Engineer and Architect Specifications

• Universal Mount: 1, 2 Gang or 4” Square back Box Mounting
• Horn or Horn / Strobe Units
• 24 Vdc Units Available with 15/75, 30/75, 60/75, or 75 or 110 Candela Strobes
• Electronic Selectable 8-Tone: Horn, Temporal, Bell, Hi-Lo, Chime, Siren, Slow-Whoop and Single Stroke Bell
• Raised Mounting Design - Eliminating Need for Deeper Back Box
• Very Low Inrush Current
• Available for Wall or Ceiling Mount Devices (in Red or White Colors)
• Light Plastic Grill Construction
• Low Operating Current - DC or Full Wave
• ADA/UL 1971 Horn-Strobe Versions
• Screw Terminals Accept #12 AWG
• UL Listed, CSFM, NYMEA & FM Approvals Pending

Description

Maximum dBA output, very low inrush current, and the lowest operating current (DC or Full Wave) are characteristics of the Cerberus Pyrotronics U-MMT devices. The electronic U-MMT horns provide maximum reliability and low current drain for every application. The U-MMT series 8-tone horn operates on a current of 20 to 40mA at 24Vdc, depending on the tone selected. The audio portion of the signal provides a 91 to 97 dB output. The U-MMT mounts on a single gang, while other units are either 1, 2 gang, or 4” square mounting. Cerberus Pyrotronics notification devices are designed with the installer in mind. The U-MMT series devices are constructed with all of the electronics in the housing, not in the box. This design helps eliminate possible ground faults from jamming everything in the box. Units are also available in two different colors: red or white. The U-MMT horn/strobe units feature a Xenon flashtube with solid-state circuitry for maximum reliability and efficiency. The strobes have a rounded dome shape made of clear Lexan®. "FIRE" letters are visible on the front mounting plate. The overall lens is 2.0" x 2 7/8” with a height of 1 3/8”. Strobe units can also be synchronous when used with the SCM-F sync or DSC (Dual Sync Control) units. To order a device in "white", use a "-W" at the end of the model number (e.g., U-MMT-W).

Ordering Information

U-MMT Series Horn Wall Mount

U-MMT Series Horn/Strobe Wall Mount

U-MMT Series Horn/Strobe Ceiling Mount

Important Notes and Specifications

Listed operating range is 20 to 31 Vdc/FWR.

Minimum UL measurements are 85-88dB taken in free air at 360° around the device and averaged. Typical readings are frontal sound readings taken with a dB meter with signal mounted on a wall. Rated for indoor use at 32°F to 120°F (0°C to 49°C) with 85% RH.

Notes: U-MMT-1G, U-MMT and U-MMT Horn / Strobes devices must be connected to compatible non-pulsing signal circuits when temporal tone is chosen. Steady current output and appropriate voltage required. When audible signal and strobe are connected to the same notification appliance circuit, the current rating is a combination of the audible signal and strobe current.

Add "-C" for Canadian ULC listed model.

Add "-CF" for Canadian French ULC listed model.

Typical Wiring Diagrams

U-MMT-1G Horn

Diagram showing the U-MMT-1G Horn wiring. It illustrates alarm polarity from the control panel or previous device connecting to the notification appliance circuit. The circuit can then connect to the next device or E.O.L. (Style Y-Class 'B' circuits) or return to the F.A.C.P. (Style Z-Class 'A' circuits). Device dimensions: 4.50"H x 2.75"W x 1.25"D.

U-MMT Horn / Strobe (Strobe & Horn on same circuits)

Diagram for U-MMT Horn/Strobe units where strobe and horn share the same circuit. It shows the notification appliance circuit connecting to the device and then to the next device or E.O.L.

U-MMT 8-Tone Select

Diagram showing the U-MMT 8-Tone Select feature, indicating connections for 1, 2, or 4 Square Mounting.

U-MMT Horn / Strobe (Strobe & Horn on separate circuits)

Diagram for U-MMT Horn/Strobe units where strobe and horn use separate circuits. It shows the option to cut jumpers to power the audible signal and strobe from separate circuits. It details connections for Strobe Notification Appliance circuit and Audible Notification Appliance circuit, leading to the next device or E.O.L.

For more detailed wiring diagrams, refer to the U-MMT Installation Instruction Sheet.