Page 4

A05-228-01

500 Series Junction Box Selection Guide*

Single

″

4

″

4

″

50

60

70

75

Gang

Oct.

Oct.

Sq.

mm

mm

mm

mm

B501

Yes

NoNoNo

Yes

Yes

Yes

No

B501B

Yes

Yes

Yes

Yes

No

No

No

No

B524RB

No

Yes

Yes

Yes

No

Yes

Yes

Yes

B524BI

No

Yes

Yes

Yes

No

No

Yes

Yes

B501BH

No

No

No

Yes

No

No

No

No

* Box depth contingent on base and wire size. Refer to National Electrical Code or applicable local codes for appropriate recommendations.

Ordering Information

Part No.

Description

UL

ULC

1551B

1551AB

Intelligent Ionization Sensor, Plug-in Head

2551HR

2551AHR

Intelligent Photoelectronic Sensor, Plug-in

Head

2551THR

2551TAHR

Intelligent High Resolution Photoelectronic

Sensor with Thermal, Plug-in Head

5551B

5551AB

Intelligent Thermal Sensor, Fixed

Temperature (135

°F), Plug-in Head

5551R

5551RA

Intelligent 135

°F Fixed Temperature/Rate-

of-Rise Thermal Sensor, Plug-in Head

B501B

B501B

Flanged Mounting Base, 6.1

″ (15.5 cm)

B501

B501

Flangeless Mounting Base, 4

″ (10.2 cm)

B524RB

B524RBA

Intelligent Relay Base, Flanged

B524BI

B524BIA

Intelligent Isolator Base, Flanged

B501BH

B501BHA

Sounder Base (includes B501 Base)

M500MB

M500MAB

Monitor Module, Interfaces with

Mechanical Contact Devices

M500CH

M500CHA

Control Module, Controls Devices

Requiring External Power

M500X

M500X

Isolator Module, Isolates Groups of

Devices Between Two Isolator Modules in

the Event of a Short Circuit Across

Communication Line

M501M

M501MA

Mini-Monitor Module

DH500

DH500A

Intelligent Duct Housing

DH500ACDC

DH500ACDCA Intelligent Duct Housing with Auxiliary

Contacts

RA400Z

RA400ZA

Remote Annunciator

Accessories

MOD400R

Field Sensitivity Test Tool

SMB600

Surface Mounting Kit for Flanged Base

(B501B)

SMK400

Surface Mounting Kit for Flangeless Base

(B501)

RMK400

Recessed Mounting Kit for Flangeless Base

(B501)

SMB500

Surface Mount Box for 500 Series Modules

XR5

Detector Head Removal Tool

XP-4

Extension Poles for XR5 Detector Removal

Tool

RS14

Replacement Screen for 1551B

RS24

Replacement Screen for 2551HR

RS24T

Replacement Screen for 2551THR

CRT400

Cover Removal Tool for 1551B

DUST45

Replacement Dust Cover for 500 Series

Smoke Sensors

System Sensor Worldwide Manufacturing & Distribution

In Canada:

Telephone: 905-812-0767

Fax: 905-812-0771

In China:

Telephone: 852-2191-9003

Fax: 852-2736-6580

In the Far East:

Telephone: 852-2191-9003

Fax: 852-2736-6580

In India:

Telefax: 91-022-8202564

In Italy:

Telephone: 39-40-9490-111

Fax: 39-40-382137

In the United Kingdom:

Telephone: 44-1403-276500

Fax: 44-1403-276501