Bosch MT-12-24-R Specsheet

Fire Alarm Systems | MT-12/24-R Multitone Electronic Appliance (red)

MT-12/24-R Multitone Electronic

Appliance (red)

Field selectable choice of eight nationally and internationally recognized alerting signals

Two installer selectable sound output levelsNFPA and ANSI compliant

UL Listed for indoor or outdoor useLow average current draw

The Wheelock MT 12/24 R appliance is an audible alarmindicating device engineered to comply with temporal pattern specifications without requiring an additional code mechanism. It offers a selection of eight tone patterns and two sound output levels. The temporal (Code 3) horn and tone patterns meet ANSI/NFPA/ISO requirements for standard emergency evacuation signaling. The extended temperature range satisfies all severe-weather outdoor applications.

Certifications and Approvals

Region	Certification
USA	UL	UCST: Audible Signal Appliances, General
		Signal (UL464), ULSZ: Audible Signal
		Appliances (UL464)
	CSFM	7135-0785:118
Canada	ULC	ULSZC: Audible Signal Appliances and
		Accessories, Fire Alarm

Cooper Wheelock, Inc. also holds these Listings and Approvals:

USA	NYC/MEA	151 93 E, Vol. 4
	CBFP	City of Chicago Bureau of Fire Protection
	ANSI	Complies with American National Stand-
		ards Institute ANSI 117.1
	ISO	Complies with International Standards Or-
		ganization
	NFPA	Complies with National Fire Protection As-
		sociation NFPA 72
	OSHA	Complies with Occupational Safety and
		Health Administration OSHA 29
		Part 1910.165

Installation/Configuration Notes

Compatible Products

The following products are compatible with the MT 12/24 R Electronic Appliance:

Category	Product ID	Product Description
Control	Compatible with all Bosch G Series, 6000 Series, 2000 Series,
Panels	DS7400Xi and DS7400XiV4, DS7080iP 32, DS7200 Series,
	and DS7060 Series Control Panels1
	D70222	Conventional FACP
	D70243	Addressable FACP
	D7024	Conventional FACP

www.boschsecurity.com

2 | MT-12/24-R Multitone Electronic Appliance (red)

Category Product ID

D80244

D91244 D10024A4

Modules SM 12/24 R DSM 12/24 R RSSP 121575W FR RSSP 241575W FR

RSSP 24MCW FR

RSSP 24MCWH FR

Product Description

Analog FACP Addressable FACP Analog FACP

Synchronization module (red) Dual synchronization module (red) Retrofit strobe plate (12 V)

Fixed candela retrofit strobe plate (24 V)

Multi candela retrofit strobe plate (24 V)

High candela retrofit strobe plate (24 V)

1 For synchronization, use the SM or DSM modules with these control panels and set the appliances and synchronization module for 12 VDC operation.

2 The D7022 can be used in either 12 VDC or 24 VDC mode, but the appliances and synchronization module must be set for the same operating voltage as the control panel.

3 When used with a D7039 Multiplex Expansion Module, the D7024 becomes an addressable fire alarm control panel (FACP).

4 For synchronization, use the SM or DSM modules with these control panels and set the appliances and synchronization module for 24 VDC operation.

Note The retrofit strobe plates are available in 12 V or 24 V models. Choose a model with the correct voltage for the control panel being used. Refer to Use as Combination Appliance.

Mounting Considerations

Outdoor or Severe Environment Applications

For an outdoor application or a severe environment (NEMA 3R) application, these multi tone appliances in combination with an IOB Indoor or Outdoor Back Box must be mounted on a flat wall such that the wall covers the entire rear surface of the back box. The back box must have its drain holes pointed toward the ground. The knockouts in the rear surface of the back box must remain intact.

The knockout hole on top of the back box is sized for a halfinch conduit and matching connector. A proper watertight conduit fitting must be used.

Indoor Applications

For inside applications, mount these multi tone appliances on the indicated back boxes for the indicated applications:

	Conduit	Surface	Semi Flush or
	Applications	Mounted	Flush Mount
Double gang		•	• *
Four inch square		•	• *
DBB		•	• *
IOB	•	•
SBB		•	•

* For semi flush applications use an ISP2 Surface Adapter.

All models have an attractive cover plate for a clean, finished appearance.

Use as Combination Appliance

Where combination appliances are required, the MT Electronic Appliances can be used with the RSSP 121575W FR (12 V, 15/75 cd), RSSP 241575W FR (24 V, 15/75 cd), RSSP 24MCW FR (24 V, 15 cd, 30 cd, 75 cd, or 110 cd), or RSSP 24MCWH FR (24 V, 135 cd or

185 cd) Retrofit Strobe Plates that are designed to meet or exceed the latest requirements of NFPA 72, ANSI 117.0 and UL 1971. The multi tone appliances and retrofit strobe plates are also compatible with the SBL2 R Retrofit Device Back Box.

Note These strobe units are not recommended for use in coded or pulsed signaling circuits.

Wiring

The input terminals accept wires with diameters between 18 AWG (1.2 mm) and 12 AWG (2.3 mm).

Parts Included

Quant. Component

1Electronic appliance

1Hardware pack

1Literature pack

Technical Specifications

Alarm Patterns and Ratings

Horn (continuous)

Current (maximum) at	High output: 176 mA VDC, 172 mA FWR
12 V:	Standard output: 34 mA VDC, 39 mA VDC
Current (maximum) at	High output: 108 mA VDC, 87 mA FWR
24 V:	Standard output:44 mA VDC, 45 mA FWR
Pattern Description:	Broadband continuous horn
Sound output* at 10 ft	High output: 92 dBA
(3 m):	Standard output: 87 dBA
Bell

Current (maximum) at	High output: 95 mA VDC, 98 mA FWR
12 V:	Standard output: 20 mA VDC, 23 mA FWR