Multicrest
fire alarm system

TMFBM01U-D
FIRE ALARM BELLFeatures• Indoor/outdoor motor driven design• Polarized mode with wide listed voltage range
using filtered DC or unfiltered FWR input voltage• Terminals for fast in/out field wiring• High sound dB output with low current draw
• Built-in trim plate for a clean flush mount installation• Gong size 6 inches only
• RFI and EMI noise suppression element built-in• Red color only

Description
The FBM01U-D is an indoor/outdoor bell utilizing a specially designed gong that gives out a loud mechanical resonant tone. The improvement isdesigned to make the bell more effective and provide performance and dependability at a low current consumption. The bell design incorporates
a micro-motor with built-in varistor suppression element to reduce RFI and EMI interference found in microprocessor driven fire alarm control
panel.
The terminal is designed to make it convenient when wiring or trouble-shooting is made. The design features as a result save you time and provide
a more effective installation for maximum performance.
The FBM01U-D is made available in 6 inches gong size and is painted red to enhance its appearance and provide a long durability.
The FBM01U-D requires 24 VDC as the rated voltage input power for its operation. The 24 VDC power can be derived from the control panel ora UL listed remote power supply.

Ordering Information
Model no. FBM01U-D

Specifications
No.
12345678Item
Gong size 6 inches
Rated voltage
Rated current
Operating range
UL rating
Indoor measurement
Operating temperature range

Specification
6 inches
24 VDC
12 mA
16 to 33 VDC
87 dB
86 to 89 dBA
0˚C to 49˚C (32˚F to 120˚F)
North American standard 4 inches square back box and 2 inches
wide gangable or non-gangable switch box for indoor use
Dedicated weather proof back box for outdoor use (BBX-4)

Applicable electrical box for installation

Detailed Electrical Specifications for Opration

DC mA
7.0

16VDC
UL
FWR mAdB
8.0
77

TypicaldB
81

DC mA
12.1

24VDC
UL
FWR mAdB
12.4
83

Typical
dB
87

DC mA
13.5

33VDC
UL
FWR mAdB
24.2
85

TypicaldB
89

Installation and Wiring Information
VerticalAngle[dB/m]

Angle[dB/m]-90-75-60-45-30-1501530
4560
75
90-5.1-4.3-1.9
1.4-3.4-4.5
0.0-4.0-3.0-1.5-2.9-2.1
-1.8

9075
60
45
30
150-15-30-45-60
-75
-90

-4.2
-0.5
2.2
-2.2
-3.7
-0.9
0.0
-0.4
-1.2
-4.4
-5.0
-5.0-5.9

f 150mm (f6")

64mm(3 17/32")

83mm (3 9/32")
Mounting holes

Horizontal

85.7mm Square(3 3/8") Mounting holes

Typical Horizontal Vertial Dispersion

Dimensions*Note: The resistance of external wiring shall be less then 100 ohms.
The capacitance of external wiring shall be less then 1 micro F.
+-+-+-

End of line resistor
Notification Appliance5.1k ohm 1/2W

Select DC
From FACP or
previous module

JP1

SLC LoopIn the case of style Z wiring

TB1
or
TB2

min boardA+

NAC 1-4
AB+

To the next module
From UL1481 power
limited power supply or
previous module

S+
24VDC(+)
24VDC(-)

24VDC(-)

B-

Wiring of NAC output on main board

2" wide gangable or
non-gangable switchbox

S-A+

A+

24+

A-24-

24VDC(+)

To the next module*Note: The resistance of external wiring shall beless than 100 ohms.
The capacitance of external wiring shall beless than 1 micro F.

MOM-4

LED+-+-Output rating:
24DVC / 2.0A+-End of line resistor
5.1k ohm 1/2W
Notification Appliance

Wiring of monitored output module (FRRU004-MOM4) with alarm bells

4" square backbox

BBX-4 weather proof backbox

NOTE
・The information contained herein does not purport to cover all the details or variations of the equipment described, nor to provide for every
possible contingency that may be met in connection with its installation, operation or maintenance.
・Specifications are subject to change without notice. Contact Nohmi before relying on the information.
・Actual performance is based on proper application of the product by a qualified professional.
・Should further information be required or should particular concerns arise that are not covered sufficiently for the purchaser’s purposes, thematter should be referred to Nohmi or your nearest distributor.

Contact• Head Office: 4-7-3 Kudan-Minami, Chiyoda-ku, Tokyo
102-8277, Japan• Phone: (81) 3 - 3265 - 0231
• F A X: (81) 3 - 3265 - 5348
URL http://www.nohmi.co.jp/english/

Catalog Number 131020Ⓓ-F-17101