EXHIBIT 21.1

TYCO INTERNATIONAL LTD. - 30 SEPTEMBER 2011

COUNTRY	ENTITY NAME	STATE

Argentina	ADT Security Services S.A. (Argentina)
	Sensormatic Argentina S.A.
	Tyco Flow Control Argentina S.A.
	Tyco Services S.A. (Argentina)

Australia	A.C.N. 095 652 645 Pty Limited
	ACN 000 343 019 Pty Limited
	ADT Wireless Pty Limited
	Coastline Foundry (Qld) Pty Limited
	Complete Engineering Group Pty Limited
	Danby Pty Limited
	ETE Coliban Pty Limited
	Fire Control Pty Limited
	Goyen Controls Co Pty Limited
	Greenspan Environmental Technology Pty Ltd
	Greenspan Technology Pty Ltd
	Keystone Asia Pacific Pty Limited
	Milperra Developments Pty Limited
	P A Pacific Pty Limited
	Prindon Holdings Pty Limited
	Rindin Enterprises Pty Limited
	Seghers-Applied Pty Ltd
	Sensormatic Australia Pty Limited
	Signature Holding Company Pty Limited
	Signature Security Group Holdings Pty Limited
	Signature Security Group Pty Limited
	Simplex International Pty Limited
	Steel Mains Proprietary Limited
	TopAq Pty Limited
	Tyco Australia Pty Limited
	Tyco Fire & Security Pty Limited
	Tyco Flexonics Australia Pty Limited
	Tyco Flow Control International Pty Limited
	Tyco Flow Control Pacific Pty Limited
	Tyco International Pty Limited
	Tyco International Security Group Pty Limited
	Tyco Projects (Australia) Pty Limited
	Tyco Water Pty Limited
	Water Infrastructure Group (Queensland) Pty Ltd

COUNTRY	ENTITY NAME	STATE

Australia	Water Infrastructure Group Pty Ltd
	Water Reticulation Systems (Virginia) Pty Limited
	Water Reticulation Systems Hire Pty Limited
	Wormald and ADT Australia Pty Limited
	Yarway Australia Pty Limited

Austria	ADT-Sensormatic Ges.m.b.H.
	Tyco Building Services Products (Austria) GmbH
	Tyco Fire & Integrated Solutions GmbH (Austria)

Bahamas, The	Tyco International Asia Inc. (Bahamas)
	Tyco Shares Ltd.
	World Services Inc.

Barbados	Exeter Holdings Limited
	Tyco Worldwide Holdings Ltd.

Belgium	ADT Europe N.V.
	Airvans Belgium S.A.
	CIPE Belgium S.A. (or NV)
	DSC International S.A.
	Tyco Fire & Integrated Solutions N.V.
	Tyco Thermal Controls NV
	WHICH Belgium S.A.

Bermuda	Tyco Capital Holdings Ltd.
	Tyco Capital Ltd.
	Tyco Delta Limited
	Tyco Epsilon Limited
	Tyco Holdings (Bermuda) No. 12 Limited
	Tyco Holdings (Bermuda) No. 14 Limited
	Tyco Holdings Limited
	Tyco International Middle East Limited
	Tyco Kappa Limited
	Tyco Omega Limited

COUNTRY	ENTITY NAME	STATE

Bermuda	Tyco Zeta
	Willoughby Assurance Ltd.

Brazil	ADT Security Services do Brasil Ltda
	Alarm-Tek Comercio E Participacoes Ltda.
	Alarm-Tek do Brasil Sistemas de Vigilancia Ltda.
	Figgie do Brasil Industria e Comercio Ltda.
	Hiter Industria e Comercio de Controles Termo-Hidraulicos Ltda.
	M.M. Participacoes Ltda.
	Mojonnier do Brasil Industria e Comercio de Equipamentos Ltda.
	S.E.C. do Brasil Ltda.
	Senelbra Industria, Comercio e Servicos Ltda. (51%)
	Sensorbrasil Comercio e Locacoes Ltda.
	Sensormatic do Brasil Eletronica Ltda. (51%)
	Tyco Fire Protection Servicos do Brasil Ltda.
	Tyco Services Ltda.
	Tyco Valves & Controls Brasil Ltda.
	Valvulas Crosby Industria e Comercio Ltda.
	Westlock Equipamentos de Controle Ltda.

British Virgin Islands	ETC International Holdings, Ltd.

Brunei	Indeco Services Sdn Bhd

Canada	ADT Canada Holdings Limited
	ADT Finance Inc.
	ADT Security Services Canada, Inc.
	Ansul Canada Limited
	Century Industries Company
	Hawley Group Canada Limited
	Intercon Security Limited
	Keystone Canada Co.
	S E C Investments of Canada Ltd.
	SecurityLink Ltd.
	Sensormatic Canada Incorporated
	TEPG Canada Inc.

COUNTRY	ENTITY NAME	STATE

Canada	Tracer Canada Incorporated
	Tracer Field Services Canada Ltd.
	Tracer Industries Canada Limited
	Tyco International of Canada Ltd.
	Tyco Project Services Canada Inc.
	Tyco Safety Products Canada Ltd.
	Tyco Thermal Controls (Canada) Ltd.
	Tyco Thermal Controls Construction Corporation
	Tyco Valves & Controls Canada Inc.

Cayman Islands	Sensormatic Cayman Finance Ltd.

Chile	ADT Security Services S.A. (Chile)
	Investim Chile S.A.
	Simplex S.A.
	Tyco Flow Control Chile S.A.
	Tyco Services S.A. (Chile)

China	ADT Macau Limited
	ADT Security Services (Shanghai) Co., Ltd. (90%)
	ADT Security Systems (Shanghai) Co., Ltd. (90%)
	Ansul Fire Equipment (Shanghai) Co., Ltd
	Keystone Valve (China) Ltd.
	Shanghai Eagle Safety Equipment Ltd.
	Tyco Fire & Integrated Systems (Guangzhou) Co., Ltd.
	Tyco Fire & Security (Beijing) Co., Ltd.
	Tyco Fire & Security (Tianjin) Ltd
	Tyco Fire & Security Services International Trading (Shanghai) Co. Ltd
	Tyco Fire, Security & Services (Macau) Limited
	Tyco Flow Control (Shanghai) Co., Ltd.
	Tyco Flow Control Beijing Co., Ltd.
	Tyco Flow Control Trading (Shanghai) Ltd.
	Tyco Safety Products (Shanghai) Co., Ltd.
	Tyco Safety Products (Shenyang) Co., Ltd.
	Tyco Thermal Controls (Huzhou) Co. Ltd
	Tyco Thermal Controls (Shanghai) Engineering Co., Ltd.
	Tyco Thermal Controls (Shanghai) Trading Co. Ltd

COUNTRY	ENTITY NAME	STATE

China	Tyco Valves & Controls (Sichuan) Co., Ltd.
	Tyco Water Valve (Shanghai) Co., Ltd

Colombia	Tyco Services S.A. (Colombia)

Costa Rica	ADT Security Services, S.A. (Costa Rica)
	Tyco Ingenieria y Construccion S.A.

Czech Republic	Feuerloschgerate Neuruppin CZ, s.r.o.
	Tyco Fire & Integrated Solutions s.r.o., clen koncernu Tyco
	Tyco Thermal Controls Czech s.r.o.
	Tyco Valves & Controls Distribution Czech s.r.o.

Denmark	Tyco Holding III (Denmark) ApS
	Tyco Holding VIII (Denmark) ApS
	Tyco Integrated Systems (Denmark) ApS
	Tyco Valves & Controls Denmark A/S
	Water Holding (Denmark) ApS

Ecuador	Sociedad Anonima Grinnell Sistemas de Proteccion Contra Incendios

Fiji	Tyco Fiji Limited

Finland	Scott Health & Safety Oy
	Scott Technologies Health & Safety Oy
	Tyco Thermal Controls Finland Oy

France	Conception et Representation de Technologie de Controle C.R.T. Controle
	Flow Control Technologies SA
	Generale de Robinetterie Industrielle et de Systemes de Surete (GRISS) S.A.
	Isogard SAS
	MANIBS France S.A.R.L. (99.4%)

COUNTRY	ENTITY NAME	STATE

France	T.S. France SA
	Tyco Building Services Products S.A.S. (France)
	Tyco Europe S.A.
	Tyco European Security Holdings SA
	Tyco Fire & Integrated Solutions France
	Tyco Flow Control Europe SAS
	Tyco Safety Products France SARL
	Tyco Thermal Controls SAS
	Tyco Valves & Controls Distribution (France) S.C.A.

Germany	ADT Deutschland GmbH
	ADT Protecco GmbH
	ADT Secured Payments GmbH
	ADT SecurePay GmbH
	ADT Security Deutschland GmbH
	ADT Sensormatic GmbH
	ADT Service-Center GmbH
	ADT Wellcom GmbH
	Chemat GmbH Armaturen fur Industrie - und Nuklearanlage
	CKS Security GmbH
	CKS Systeme GmbH & Co. KG
	COSMOS Feuerloeschgeraetebau GmbH
	DA Export International GmbH
	Dritte Korschenbroicher Armaturen GmbH
	Erste Korschenbroicher Armaturen GmbH & Co. KG
	Erste Korschenbroicher Armaturen Verwaltungs GmbH
	Erwin Burbach Maschinenfabrik GmbH
	Feuerloeschgeraete GmbH Neuruppin
	FLN Feuerloschgerate Neuruppin Vertriebs GmbH
	Flow Control Holding GmbH & Co. KG
	Flow Control Holding Verwaltungs GmbH
	Fondermann GmbH
	Helmut Geissler Glasinstrumente GmbH
	Inter-Brandschutz GmbH
	Mecafrance (Deutschland) GmbH
	NEUHAUS Feuerloschgerate GmbH
	S+S Armaturen Technology GmbH
	SABO-Armaturen Service GmbH
	Sempell AG

COUNTRY	ENTITY NAME	STATE

Germany	TEPG GmbH
	Total Feuerschutz GmbH
	Total Walther Beteiligungsgesellschaft mbH
	Total Walther Feuerschutz Loschmittel GmbH
	Total Walther GmbH, Feuerschutz und Sicherheit
	Trade GmbH
	Tyco Building Services Products (Germany) GmbH
	Tyco Building Services Products Division GmbH
	Tyco European Investments Deutschland GmbH
	Tyco Holding GmbH
	Tyco International Armaturen Holding GmbH
	Tyco International PLT Deutschland GmbH
	Tyco International PLT GmbH
	Tyco International PLT Klartechnik GmbH
	Tyco International PLT Umwelttechnik GmbH
	Tyco Thermal Controls GmbH
	Tyco Thermal Controls Holding GmbH
	Tyco Umwelttechnik GmbH
	Tyco Valves & Controls Distribution GmbH
	Vierte Korschenbroicher Armaturen GmbH & Co. KG
	Vierte Korschenbroicher Armaturen Verwaltungs GmbH
	WOPF Befestigungselemente GmbH
	Zweite Korschenbroicher Armaturen GmbH

Gibraltar	Espion (International) Limited
	Silver Avenue Holdings Limited
	Stralen Investments Limited
	Tyco International (Gibraltar) II Limited
	Tyco International (Gibraltar) III Limited
	Tyco International (Gibraltar) IV Limited

Greece	Tyco International PLT (Hellas) Ltd

Guatemala	ADT Sistemas de Seguridad, S.A. (Guatemala)
	Grinnell Sistemas de Proteccion Contra Incendio S.A. (Guatemala)
	Tyco Ingenieria y Construccion S.A. (Guatemala)

COUNTRY	ENTITY NAME	STATE

Hong Kong	ADT Hong Kong Limited
	ATS Technology (Hong Kong) Limited
	Sensormatic Far East Limited
	Sensormatic Hong Kong Limited
	Thorn Security (Hong Kong) Limited
	Tyco Engineering & Construction (Hong Kong) Limited
	Tyco Fire and Security Services China Limited
	Tyco Flow Control Hong Kong Limited
	Union Spirit Enterprises Limited
	Wormald Engineering Services Limited

Hungary	Erste Korschenbroicher Armaturen Hungary Kereskedellmi Kft. (96.67%)
	Tyco Building Services Products (Hungary) Kft
	Tyco Valves & Controls Distribution Ltd [Hungary]

India	JCF Fluid Flow India Private Limited
	Sakhi-Raimondi Valves (India) Pvt Ltd (76.03%)
	Simplex Building Systems Pvt Ltd
	Tyco Fire & Security India Private Limited
	Tyco Thermal Controls India Private Limited
	Tyco Valves & Controls India Pvt. Ltd.

Indonesia	PT Tyco Eurapipe Indonesia

Ireland	ACE Alarm Systems Limited
	ADT Fire and Security Limited
	ADT Limited
	Brangate Limited
	Fondermann & Co. (Ireland) Limited
	Mather & Platt (Ireland) Limited
	Mountainbran Limited
	Obsidian HCM Holdings Ireland
	Obsidian HCM Med Holdings Ireland
	Obsidian HCM Med International Holdings
	Plateau Automation Limited
	SEC Investments of Ireland

COUNTRY	ENTITY NAME	STATE

Ireland	Sensormatic Electronics Corporation (Ireland) Limited
	Sensormatic European Distribution Limited
	Sensormatic R&D Limited
	Tyco Far East Holdings Limited
	Tyco International Finance Ireland
	Tyco Ireland Limited
	Tyco Valves and Controls Ireland Limited
	Unistrut Ireland Limited
	Waterson (Unlimited)
	Witham

Ireland, Northern	Controlled Electronics Management Systems Limited
	Flo-Check Valves Limited
	Intellectual Systems Ltd.

Isle of Man	Modern Security Systems (IOM) Ltd.
	Obsidian HCM Med Isle of Man

Israel	Arrowhead Acquisition Corporation Ltd.

Italy	ADT Fire & Security Italia S.p.A.
	Bentel Security S.r.l.
	Biffi Italia S.r.l.
	MECAIR S.r.L.
	Sabo Foam Srl
	Tyco Building Services Products (Italy) S.r.l.
	Tyco Flow Control Italia S.r.l.
	Tyco Valves and Controls Italia S.r.l.

Japan	Tyco Flow Control Japan Co., Ltd.
	Tyco Thermal Controls Japan Co., Ltd.

Kazakhstan	Tyco Thermal Controls Kazakhstan LLP

COUNTRY	ENTITY NAME	STATE

Luxembourg	ADT Finance S.A.
	ADT Luxembourg S.A.
	Tyco Brazil (Luxembourg) S.a.r.l.
	Tyco Flow Control Luxembourg S.a.r.l.
	Tyco Holding IV (Denmark) SE
	Tyco International Finance S.A.
	Tyco International Group S.A.
	Tyco International Holding S.a.r.l.

Malaysia	ADT Services (M) Sdn. Bhd.
	ETC - CP (M) Sdn Bhd
	Euratech (Malaysia) Sdn. Bhd.
	Life Engineering Sdn. Bhd.
	Tyco Fire, Security & Services Malaysia Sdn Bhd
	Tyco Flow Control (Malaysia) Sdn. Bhd.
	Tyco Grinnell KM Sdn. Bhd.
	Tyco Services Malaysia Sdn. Bhd.
	Tyco Valves & Controls (M) Sdn. Bhd.

Mauritius	Tyco Asia Investments Limited

Mexico	ADT Holding de Mexico, S.A. de C.V.
	ADT Integrated Solutions, S.A. de C.V.
	ADT Private Security Services de Mexico, S.A. de C.V.
	ADT Security Services, S.A. de C.V.
	Ansul Mexico, S.A. de C.V.
	Fire Equipment de Mexico, S.A. de C.V.
	S.L.K. Alarm Services, S.A. de C.V.
	Sensormatica, S. de R.L. de C.V.
	Simplex Grinnell, S.A. de C.V.
	Tyco Engineering & Construction, S.A. de C.V.
	Tyco International de Mexico, S. de R.L. de C.V.
	Tyco Services, S.A. de C.V. (Mexico)
	Tyco Valves and Controls de Mexico, S.A. de C.V.

Namibia	ADT Security Namibia (Proprietary) Limited

COUNTRY	ENTITY NAME	STATE

Netherlands	AIM Nederland B.V.
	Glearth B.V.
	Pritchard Services Group BV
	Protector Technologies BV
	Sensormatic B.V.
	Sensormatic Distribution & Holdings B.V.
	Sensormatic Investments Associates B.V.
	Tyco Building Services Products B.V.
	Tyco Fire & Security Nederland BV
	Tyco Flow Control Holding NL B.V.
	Tyco Thermal Controls BV
	Tyco Valves & Controls B.V.

New Zealand	Armourguard Security Limited
	Keystone New Zealand Company
	New Zealand Valve Company
	Nortrac Engineering Company
	Sensormatic New Zealand Limited
	Tyco Flexonics NZ Company
	Tyco New Zealand Limited

Norway	Tyco Building Services Products (Norway) AS
	Tyco Fire & Integrated Solutions (Norway) AS
	Tyco Thermal Controls Norway AS

Pakistan	Tyco Fire & Security Pakistan (PVT) Ltd.

Peru	Tyco Services S.A. (Peru)

Philippines	Tyco PIECO Corporation, Inc.

Poland	Tyco Thermal Controls Polska Sp. z.o.o.
	Tyco Valves & Controls Polska Sp.z.o.o.

COUNTRY	ENTITY NAME	STATE

Portugal	Sensormatic Proteccao Contra Furto, Lda
	Tyco Integrated Systems (Portugal), Unipessoal Lda

Puerto Rico	ADT Security Services Puerto Rico, Inc.
	SecurityLink of Puerto Rico, Inc.
	Sensormatic del Caribe, Inc. (Puerto Rico)

Romania	Robinete Raf Campina, S.A.
	SC FCT Industrial Srl
	Tyco Thermal Controls Romania S.R.L.

Russia	Limited Liability Company ADT Security Solutions
	Tyco Thermal Controls [Russia]

Scotland	Keystone Valve (U.K.) Ltd.
	Rhomax Engineering Limited
	Tyco Valves & Controls Distribution (UK) Limited
	WM Fire Protection Limited

Singapore	Central Spraysafe Company Pte Ltd
	Greenspan Singapore Private Limited
	Safety Systems UK Pte. Ltd.
	TEPG Pte Ltd
	Tyco Building Services Pte. Ltd.
	Tyco Fire & Building Products Asia Pte. Ltd.
	Tyco Fire, Security & Services Pte. Ltd.
	Tyco Flow Control Pte. Ltd.
	Tyco Pipe Systems Pte Ltd

Slovakia	Tyco Fire & Integrated Solutions (Slovakia) s.r.o.

South Africa	ADT Kusela (Pty) Ltd (74%)
	ADT Security (Proprietary) Ltd (South Africa)

COUNTRY	ENTITY NAME	STATE

South Africa	ADT Security Guarding (Proprietary) Limited
	Ansul South Africa (Proprietary) Limited
	Sentry Response (Pty) Ltd
	TM Monitoring (Pty) Ltd
	Tyco Flow Control Africa (PTY) LTD
	Tyco Valves and Controls Distribution SA (Proprietary) Limited
	Tyco Waterworks (Pty) Ltd.

South Korea	ADT Caps Co., Ltd.
	ADT Security Co., Ltd.
	Capstec Co., Ltd.
	Dong Bang Electronic Industrial Co. Ltd.
	Keystone Valve (Korea) LLC
	Tyco Marine Services Korea Company Limited
	Tyco Thermal Controls Korea Ltd.

Spain	ADT Espana Servicios de Seguridad, S.L.
	Sensormatic Electronics Corporation S.A.
	Sensormatic Electronics Corporation Services SA
	Wormald Mather & Platt Espana, S.A.

Sri Lanka	A&E Products Lanka (PVT) Ltd

Sweden	Erichs Armatur AB (50%)
	Svenska Skum International AB
	Tyco Building Services Products (Sweden) AB
	Tyco Thermal Controls Nordic AB

Switzerland	ADT Services AG
	Neotecha AG
	Swiss Alertis AG
	Tyco China (Switzerland) GmbH
	Tyco Fire & Integrated Solutions (Schweiz) AG
	Tyco Fire Protection & Security Solutions AG
	Tyco Flow Control AG

COUNTRY	ENTITY NAME	STATE

Switzerland	Tyco Flow Control Holdings Switzerland GmbH
	Tyco Flow Control Switzerland GmbH
	Tyco Flow Services AG
	Tyco International FH (Switzerland) GmbH
	Tyco International Finance Group GmbH
	Tyco International Finance Holding GmbH
	Tyco International Holding S.a.r.l., Luxembourg (LU), Schaffhausen Branch
	Tyco International Ltd.
	Tyco International Services Holding GmbH
	Tyco Italy (Switzerland) GmbH
	Tyco-ADT Security Services AG

Taiwan	ADT Security Services Ltd
	Taiwan Valve Co., Ltd
	Tyco Fire, Security & Services Taiwan Limited
	Tyco Valves & Controls (Taiwan) Ltd

Thailand	ADT Sensormatic (Thailand) Co., Ltd.
	Tyco International PLT (Thailand) Limited
	Tyco International PLT Engineering (Thailand) Limited
	Tyco Valves & Controls (Thailand) Limited
	WHC Holdings Limited
	Windmill Street Limited

United Arab Emirates	Emirates Techno Casting FZE
	Emirates Techno Casting Holdings Limited
	Emirates Techno Casting LLC
	JC Middle East FZE
	JC Saudi FZE
	JCF Fluid Flow FZE
	KEF Holdings Limited
	Tyco Flow Control Middle East FZE

United Kingdom	ACE Security (Derbys) Limited
	ADT (Private Unlimited Company)
	ADT (UK) Holdings PLC

COUNTRY	ENTITY NAME	STATE

United Kingdom	ADT (UK) Limited
	ADT Finance PLC
	ADT Fire and Security PLC
	ADT Group PLC
	ADT Pension Fund Limited
	ADT Trustees Limited
	ADT UK Investments Limited
	Advanced Independent Monitoring Limited
	American District Telegraph Services International Limited
	Atlas Fire Engineering Limited
	Audix Systems Limited
	Automated Loss Prevention Systems Limited
	Automated Security (Holdings) PLC
	Automated Security Limited
	Britannia Security Group Limited
	C.E. Security Systems Limited
	Central Spraysafe Company Limited
	Control Equipment Limited
	Debro Engineering and Presswork Limited
	Edward Barber & Company Limited
	Edward Barber (U.K.) Limited
	Farnham Limited
	Figgie (G.B.) Ltd.
	Figgie (U.K.) Limited
	Figgie Sportswear (U.K.) Limited
	Figgie Sportswear Limited
	Fire Defender (U.K.) Limited
	Garfield Security Systems Limited
	Goyen Controls Co UK Limited
	Grinnell (U.K.) Limited
	Hindle Cockburns Limited
	How Fire Limited
	How Fire Maintenance Limited
	JEL Building Management Limited
	Kean and Scott Limited
	Kingsclere Investments Ltd.
	Macron Safety Systems (UK) Limited
	Modern Security Systems (Private Unlimited Company)
	Narvik-Yarway Limited
	OCYT 1 Limited

COUNTRY	ENTITY NAME	STATE

United Kingdom	OCYT 10 Limited
	OCYT 2 Limited
	OCYT 3 Limited
	OCYT 4 Limited
	OCYT 5 Limited
	OCYT 6 Limited
	OCYT 7 Limited
	OCYT 9 Limited
	Pritchard Services Group Investments Limited
	Protection One (UK) Limited
	Protector Technologies Limited
	Proximex Limited
	Raychem HTS Limited
	Sabre Supply Management Limited
	Safety Systems UK Limited
	Scott Health & Safety Limited
	Security Centres Holdings Limited
	Security Centres Investments Limited
	Sensormatic (U.K.) Limited
	Sensormatic Camera Limited
	Sensormatic Commercial/Industrial Ltd.
	Sensormatic Finance Limited
	Sensormatic Investments Limited
	Sensormatic Limited
	Shearwater Solutions Limited
	Shepton Holdings Limited
	Spector Lumenex Limited
	Spensall Engineering Limited
	Spraysafe Automatic Sprinklers Limited
	Steel Support Systems Limited
	Ten Acre Securities Ltd.
	Thorn Security Group Limited
	Thorn Security Limited
	Thorn Security Pension Trustees Limited
	TSG Trustees Limited
	Tyco Building Services Products (UK) Limited
	Tyco Engineered Products (UK) Ltd
	Tyco Engineering Services Limited
	Tyco European Metal Framing Limited
	Tyco European Steel Strip Limited

COUNTRY	ENTITY NAME	STATE

United Kingdom	Tyco European Tubing Limited
	Tyco Fire & Integrated Solutions (UK) Limited
	Tyco Fire Products Manufacturing Limited
	Tyco Flow Control (UK) Limited
	Tyco Holdings (UK) Limited
	Tyco Integrated Systems Limited
	Tyco Thermal Controls UK Limited
	Tyco Tubing Limited
	Tyco Valves & Controls Gulf Limited
	Tyco Valves Limited
	Westlock Controls Limited
	Whessoe Vapour Control Ltd
	Whessoe Varec Company, The
	Wormald Fire Systems Limited
	Wormald Holdings (U.K.) Ltd.
	Wormald Industrial Property Ltd.

United States	Activation Technologies, LLC	DE
	ADT Holdings, Inc.	DE
	ADT Investments II, Inc.	DE
	ADT Investments, Inc.	DE
	ADT Maintenance Services, Inc.	DE
	ADT Security Services, Inc.	DE
	ADT Security Systems, West, Inc	DE
	ADT Title Holding Company I	DE
	ADT Title Holding Company II	DE
	Alliance Integrated Systems, Inc.	DE
	API Security, Inc.	DE
	Arrowsmith Limited Partnership	MA
	Automated Security Corp.	DE
	Automated Security Holdings, Inc.	DE
	Barricade Merger Sub, Inc.	DE
	CCTC International, Inc.	DE
	CEM Access Systems, Inc.	TX
	Central CPVC Corporation	AL
	Central Sprinkler Company	PA
	Central Sprinkler Holdings, Inc.	DE
	Chagrin H.Q. Venture Ltd. (50%)	OH
	Chagrin Highlands Inc.	OH

COUNTRY	ENTITY NAME	STATE

United States	Chagrin Highlands Ltd. (50%)	OH
	Chemguard, Inc.	TX
	Citrine Pool LLC	NV
	Connect 24 Wireless Communications Inc.	DE
	Crosby Valve, LLC	NV
	CVG Holding Corp.	DE
	D.A.S. International, Ltd.	WI
	Descote, Inc.	LA
	Digital Security Controls, Inc.	NY
	Domestic Alarm, Inc.	CA
	Electro Signal Lab, Inc.	DE
	FCI Liquidations, Inc.	DE
	Figgie Leasing Corporation	DE
	Fire Products GP Holding, LLC	DE
	Glynwed Holdings, Inc.	DE
	Goodrich Westminster Limited Partnership	MA
	Goyen Valve Corporation	CA
	Grinnell LLC	DE
	Haz-Tank Fabricators, Inc.	TX
	IMB, A Simplex Company, L.L.C.	DE
	International Financing, Inc.	DE
	J.R. Clarkson Company, The	NV
	Keystone (US) Management, Inc.	NV
	Keystone France Holdings Corp.	DE
	Keystone Germany Holdings Corp.	DE
	Keystone Kuwait, Inc.	DE
	Keystone Saudi, Inc.	TX
	Master Protection, LP	DE
	MCS Communication Products Inc.	CA
	Obsidian HCM Holdings, Inc.	DE
	Obsidian HCN International Corporation	DE
	Paul Scott Security Systems, Inc.	NJ
	Paul Scott Security Systems, LLC	NJ
	Proximex Corporation	DE
	Raychem International Holdings, LLC	DE
	Retail Expert, Inc.	DE
	RI Corporation	DE
	S2 Mergersub Inc.	NJ
	Safe Link Corporation	MN
	Sakertrax, Inc.	CA

COUNTRY	ENTITY NAME	STATE

United States	Scott Technologies, Inc.	DE
	Scott Technologies Foundation	OH
	Senelco Iberia, Inc.	DE
	Sensormatic Asia/Pacific, Inc.	DE
	Sensormatic Distribution, Inc.	DE
	Sensormatic Electronics Corporation (Puerto Rico)	DE
	Sensormatic Electronics, LLC	NV
	Sensormatic International Holdings II, Inc.	DE
	Sensormatic International, Inc.	DE
	Sensormatic Technology, Inc.	FL
	Simplex Asia I, Inc.	DE
	Simplex Thailand, L.L.C.	DE
	Simplex Time Recorder Co.	MA
	SimplexGrinnell Holdings, Inc.	DE
	SimplexGrinnell LP	DE
	Smith Alarm Systems, Inc.	TX
	STI Licensing Corporation	DE
	STI Properties, Inc.	DE
	STI Properties, Ltd.	OH
	STI Risk Management Co.	FL
	STR Grinnell GP Holding, LLC	NV
	STR Realty Holdings LLC	DE
	Telestate International, Inc.	DE
	Tracer Construction Company	DE
	Tracer Field Services, Inc.	DE
	Tracer Industries Finance Co., Inc.	DE
	Tracer Industries International, Inc.	TX
	Tracer Industries Management Co., Inc.	DE
	Tracer Industries, Inc.	DE
	Tracer Licensing, L.P.	DE
	TV&C GP Holding, LLC	NV
	Tyco Acquisition Corp. XXV (NV)	NV
	Tyco Acquisition Epsilon LLC	NV
	Tyco Capital Investments, Inc.	NV
	Tyco Finance Corp.	DE
	Tyco Fire & Security LLC	NV
	Tyco Fire Products LP	DE
	Tyco Flow Control Company LLC	DE
	Tyco Flow Control International Holdings A, LLC	DE
	Tyco Flow Control International Holdings B, LLC	DE

COUNTRY	ENTITY NAME	STATE

United States	Tyco Flow Control International Holdings C, LLC	DE
	Tyco Flow Control International Holdings D, LLC	DE
	Tyco Holdings of Nevada, Inc.	NV
	Tyco International (US) International Holdings B, LLC	DE
	Tyco International Asia, Inc.	DE
	Tyco International Management Company, LLC	NV
	Tyco International PLT Holdings TAC, Inc.	NV
	Tyco International PLT Holdings, Inc.	DE
	Tyco International PLT, Inc.	DE
	Tyco International US China Inc.	DE
	Tyco Merger Sub (NJ) Inc.	NJ
	Tyco Receivables Corp.	DE
	Tyco Safety Products (US), LLC	NV
	Tyco Safety Products US, Inc.	NV
	Tyco Thermal Controls Holdings B LLC	DE
	Tyco Thermal Controls Holdings LLC	DE
	Tyco Thermal Controls LLC	DE
	Tyco Valves & Controls LP	DE
	Tyco Valves & Controls, Inc.	TX
	Tyco Valves and Controls Middle East, Inc.	DE
	Tyco Valves and Controls U.A.E., Inc.	TX
	Tyco Water Corp.	TX
	Tyco Worldwide Services, Inc.	DE
	United States Construction Co.	DE
	Water Holdings Corp.	DE
	Westec Business Security, Inc.	DE
	Westlock Controls Corporation	DE
	Westlock Controls Holdings, Inc.	NV
	White Mountain Group Holdings, Inc.	NV
	White Mountain Insurance Company	VT
	WillFire HC, LLC	DE
	Willoughby Holdings Inc.	DE
	Yarway Corporation	PA

Uruguay	ADT Security Services S.A. (Uruguay)
	Knogo Latin America S.A.
	Tyco Flow Control del Uruguay S.A.

COUNTRY	ENTITY NAME	STATE

Venezuela	Ansul de Venezuela C.A.
	Grinnell Sistemas de Proteccion Contra Incendio S.A. (Venezuela)
	Servicios Tyco Internacional VE 1060, C.A.
	Tyco Flow Control de Venezuela, C.A.

Vietnam	Tyco Engineering (Vietnam) Ltd.

Zambia	ADT Security Services Limited [Zambia]