Exhibit

Exhibit 21.1



TYCO INTERNATIONAL PLC - SEPTEMBER 25, 2015
COUNTRY	ENTITY NAME	STATE

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

Australia	A.C.N. 000 343 019 Pty Limited
	ADT Wireless Pty Limited
	Complete Engineering Group Pty Ltd
	Fire Control Pty Limited
	LT Joint Venture Pty Limited (50%)
	Maintenance Software Solutions Pty Ltd
	National Fire Holdings Pty Limited
	National Fire Solutions (QLD) Pty Ltd
	National Fire Solutions (VIC) Pty Ltd
	National Fire Solutions (WA) Pty Ltd
	National Fire Solutions Pty. Limited
	NFS Pipe Fabrications (QLD) Pty Ltd
	P A Pacific Pty Limited
	Prindon Holdings Pty Limited
	Rindin Enterprises Pty Limited
	Sensormatic Australia Pty Limited
	Signature Holding Company Pty Limited
	Signature Security Group Holdings Pty Limited
	Signature Security Group Pty Limited
	Simplex International Pty Limited
	Tyco Australia Pty Limited
	Tyco Fire & Security Pty Limited
	Tyco International Pty Limited
	Tyco International Security Group Pty Limited
	Tyco Projects (Australia) Pty Limited
	Wagga Fire Protection Pty. Ltd.
	Wormald and ADT Australia Pty Limited

Austria	Tyco Building Services Products (Austria) GmbH
	Tyco Integrated Fire & Security Austria GmbH

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

Belgium	CIPE Belgium S.A. (or NV)
	DSC International S.A.
	SA Oktopus NV
	Tyco Fire & Integrated Solutions N.V.

Bermuda	Tyco Kappa Limited



TYCO INTERNATIONAL PLC - SEPTEMBER 25, 2015
COUNTRY	ENTITY NAME	STATE
Brazil	ADT Security Services do Brasil Ltda.
	ADT Servicos de Monitoramento Ltda.
	Alarm-Tek Comercio E Participacoes Ltda.
	Alarm-Tek do Brasil Sistemas de Vigilancia Ltda.
	Figgie do Brasil Industria e Comercio Ltda.
	IST do Brasil Distribuicao e Venda de Detectores de Gas e Incendio Ltda.
	Mojonnier do Brasil Industria e Comercio de Equipamentos Ltda.
	S.E.C. do Brasil Ltda.
	Senelbra Industria, Comercio e Servicos Ltda.
	Sensorbrasil Comercio e Locacoes Ltda.
	Sensormatic do Brasil Eletronica Ltda.
	Tyco Services Ltda.

Brunei Darussalam	Indeco Services Sdn Bhd

Bulgaria	Elpas Bulgaria EOOD

Canada	Sensormatic Canada Incorporated
	TEPG Canada Inc.
	Tyco Integrated Fire & Security Canada, Inc.
	Tyco International Canada Pool Corporation
	Tyco Safety Products Canada Ltd.

Cayman Islands	Sensormatic Cayman Finance Ltd.

Chile	ADT Security Services S.A. (Chile)
	Tyco Services S.A. (Chile)
	Westfire Sudamerica SpA

China	ADT Security Services Co., Ltd. (90%)
	ADT Security Systems (Shanghai) Co., Ltd. (90%)
	Ansul Fire Equipment (Shanghai) Co., Ltd
	Beijing Master Systems Engineering Co., Ltd (75%)
	Jiaxing Detcon Co., Ltd.
	Oldham Instrument (Shanghai) Co., Ltd.
	Shanghai Eagle Safety Equipment Ltd.
	Shanghai Jindun Fire-Fighting Science and Technology Co., Ltd.
	Tyco (China) Investment Co., 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 Protection Products Trading (Shanghai) Co., Ltd.
	Tyco Safety Products (Shanghai) Co., Ltd.
	Tyco Safety Products (Shenyang) Co., Ltd.

Colombia	Tyco Services S.A. (Colombia)



TYCO INTERNATIONAL PLC - SEPTEMBER 25, 2015
COUNTRY	ENTITY NAME	STATE

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

Czech Republic	Tyco Fire & Security Czech Republic s.r.o.

Denmark	Tyco Holding VIII (Denmark) ApS
	Tyco Integrated Systems (Denmark) ApS
	Water Holding (Denmark) ApS

Fiji	Tyco Fiji Limited

Finland	Scott Health & Safety Oy
	Scott Technologies Health & Safety Oy

France	FootFall France S.a.r.l.
	Isogard SAS
	Oldham SAS
	Simtronics SAS
	Tyco Building Services Products S.A.S. (France)
	Tyco Europe S.A.S.
	Tyco Fire & Integrated Solutions France
	Tyco Safety Products France SARL

Germany	ADT Deutschland GmbH
	ADT Protecco GmbH
	ADT Sensormatic GmbH
	ADT Service-Center GmbH
	CKS Systeme GmbH
	COSMOS Feuerloeschgeraetebau GmbH
	FLN Feuerloschgerate Neuruppin Vertriebs-GmbH
	Fondermann GmbH
	Footfall Central Europe GmbH
	Helmut Geissler Glasinstrumente GmbH
	Oldham Winter GmbH
	Total Feuerschutz GmbH
	Total Walther Feuerschutz Loschmittel GmbH
	Total Walther GmbH, Feuerschutz und Sicherheit
	Tyco Building Services Products (Germany) GmbH
	Tyco Building Services Products Division GmbH
	Tyco Fire & Security Deutschland GmbH
	Tyco Fire & Security Holding Germany GmbH
	Tyco Holding GmbH
	Tyco Second Holding GmbH
	Tyco Service & Montage GmbH
	Visonic Sicherheitstechnik GmbH
	WOPF Befestigungselemente GmbH



TYCO INTERNATIONAL PLC - SEPTEMBER 25, 2015
COUNTRY	ENTITY NAME	STATE

Gibraltar	Stralen Investments Limited
	Tyco International (Gibraltar) II Limited
	Tyco International (Gibraltar) IV Limited

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

Hong Kong	ADT Hong Kong Limited
	Master Holding 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
	Union Spirit Enterprises Limited
	Wormald Engineering Services Limited

Hungary	Tyco Building Services Products (Hungary) Kft

India	IST Oldham Instruments India Private Limited
	Qolsys Softwares India Private Limited
	Tyco Fire & Security India Private Limited
	Tyco Safety Products (India) Private Limited

Ireland	ACE Alarm Systems Limited
	ADT Fire and Security Limited
	ADT Limited
	Fondermann & Co. (Ireland) Limited
	Mather & Platt (Ireland) Limited
	Obsidian HCM Holdings Ireland
	Obsidian HCM Med Holdings Ireland
	Obsidian HCM Med International Holdings
	SEC Investments of Ireland
	Sensormatic Electronics Corporation (Ireland) Limited
	Sensormatic European Distribution Limited
	Tyco Far East Holdings Limited
	Tyco Ireland Limited

Isle of Man	Obsidian HCM Med Isle of Man

Israel	Elpas Solutions Ltd.
	Visonic Ltd.
	Visonic Marketing (1988) Ltd.
	Visonic Solutions Ltd.

Italy	Bentel Security S.r.l.



TYCO INTERNATIONAL PLC - SEPTEMBER 25, 2015
COUNTRY	ENTITY NAME	STATE
	FootFall Italia S.r.l.
	Sabo Foam Srl
	Tyco Building Services Products (Italy) S.r.l.
	Tyco Fire & Security S.p.A.

Japan	Tyco International Japan G.K.

Luxembourg	ADT Finance S.A.
	Tyco Fire & Security Finance S.C.A.
	Tyco Fire & Security S.a.r.l.
	Tyco International Finance S.A.
	Tyco International Group S.A.
	Tyco International Holding S.a.r.l.

Macau	Tyco Fire, Security & Services (Macau) Limited

Malaysia	ADT Services (M) Sdn. Bhd.
	Life Engineering Sdn. Bhd.
	Tyco Fire Protection Products (Malaysia) Sdn. Bhd.
	Tyco Fire, Security & Services Malaysia Sdn Bhd
	Tyco Grinnell KM Sdn. Bhd.
	Tyco Services Malaysia Sdn. Bhd.

Mauritius	Tyco Asia Investments Limited

Mexico	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.
	Sensormatica, S. de R.L. de C.V.
	Simplex Grinnell, S.A. de C.V.
	Tyco International de Mexico, S. de R.L. de C.V.
	Tyco Servicios Compartidos, S.C.

Namibia	ADT Security Namibia (Proprietary) Limited

Netherlands	AIM Nederland 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

New Zealand	ADT Security Limited
	Sensormatic New Zealand Limited



TYCO INTERNATIONAL PLC - SEPTEMBER 25, 2015
COUNTRY	ENTITY NAME	STATE
	Tyco New Zealand Limited

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

Pakistan	Tyco Fire & Security Pakistan (PVT) Ltd.

Panama	Tyco Integrated Fire & Security Panama, S.A.

Peru	Westfire Sudamerica S.R.L.

Philippines	Tyco PIECO Corporation, Inc.

Poland	Visonic Sp.Zo.o. Ltd.

Portugal	Creativesystems - Sistemas E Servicos De Consultoria, S.A.
	Sensormatic Proteccao Contra Furto, Lda
	Tyco Integrated Systems (Portugal), Unipessoal Lda

Puerto Rico	Sensormatic del Caribe, Inc.
	Tyco Integrated Security Puerto Rico, Inc.

Russia	Limited Liability Company ADT Security Solutions

Scotland	Gas Measurement Instruments Limited
	WM Fire Protection Limited

Singapore	Central Spraysafe Company Pte Ltd
	First City Care (Singapore) Pte. Ltd.
	TEPG Pte Ltd
	Tyco Building Services Pte. Ltd.
	Tyco Fire & Building Products Asia Pte. Ltd.
	Tyco Fire, Security & Services Pte. Ltd.

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

South Africa	ADT Kusela (Pty) Ltd (74%)
	ADT Security (Proprietary) Limited (South Africa)
	ADT Security Guarding (Proprietary) Limited
	Ansul South Africa (Proprietary) Limited
	Sentry Response (Pty) Ltd

South Korea	Dong Bang Electronic Industrial Co. Ltd.
	Seaplus Co., Ltd.
	Tyco Fire Integrated Services Korea Co., Ltd.
	Tyco Marine Services Korea Company Limited



TYCO INTERNATIONAL PLC - SEPTEMBER 25, 2015
COUNTRY	ENTITY NAME	STATE

Spain	FootFall Iberica SL
	LPG Tecnicas en Extincion de Incendios, S.L.
	Tyco Integrated Fire and Security Corporation Servicios, S.A.
	Tyco Integrated Fire and Security Corporation, S.A.
	Tyco Integrated Security, S.L.
	Visonic Iberica de Seguridad, S.L.
	Wormald Mather & Platt Espana, S.A.

Sri Lanka	A&E Products Lanka (PVT) Ltd

Sweden	Svenska Skum International AB
	Tyco Building Services Products (Sweden) AB

Switzerland	Swiss Alertis AG
	Tyco Fire & Security GmbH
	Tyco Integrated Fire & Security (Schweiz) 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), Neuhausen am Rheinfall Branch
	Tyco International Services Holding GmbH
	Tyco Italy (Switzerland) GmbH

Taiwan	Shurjoint Piping Products, Inc.
	Tyco Fire, Security & Services Taiwan Limited

Thailand	WHC Holdings Limited

Turkey	Tyco Yangin Korunum Sistemleri Anonim Sirketi

United Arab Emirates	IST Fire & Gas DMCC

United Kingdom	ADT (UK) Holdings PLC
	ADT (UK) Limited
	ADT Finance PLC
	ADT Fire and Security PLC
	ADT Group PLC
	ADT South Africa Holding Limited
	ADT Trustees Limited
	Advanced Independent Monitoring Limited
	Amberwell Holdings Limited
	American District Telegraph Services International Limited
	Atlas Fire Engineering Limited
	Audix Systems Limited
	Automated Loss Prevention Systems Limited
	Automated Security (Holdings) PLC



TYCO INTERNATIONAL PLC - SEPTEMBER 25, 2015
COUNTRY	ENTITY NAME	STATE
	Automated Security Limited
	Britannia Security Group Limited
	Central Spraysafe Company Limited
	Control Equipment Limited
	Controlled Electronic Management Systems Limited
	Farnham Limited
	FCF (Services) Limited
	Figgie (G.B.) Ltd.
	Figgie (U.K.) Limited
	Figgie Sportswear (U.K.) Limited
	Figgie Sportswear Limited
	First Choice Facilities Limited
	First City Care (London) plc
	FootFall Limited
	Gas Performance Testing Services Ltd.
	GMI Group Holdings Limited
	How Fire Limited
	Infrared Leasing Limited
	Infrared Systems Group Ltd.
	Instant Fire Protection Limited
	Intellectual Systems Ltd.
	Kingsclere Investments Ltd.
	LPG Fire Limited
	Macron Safety Systems (UK) Limited
	Modern Security Systems (Private Unlimited Company)
	Pritchard Services Group Investments Limited
	Proximex Limited
	Scott Health & Safety Limited
	Sensormatic Commercial/Industrial Ltd.
	Sensormatic Finance Limited
	Sensormatic Limited
	Shepton Holdings Limited
	Spraysafe Automatic Sprinklers Limited
	Thorn Security Group Limited
	Thorn Security Limited
	Thorn Security Pension Trustees Limited
	Tyco Building Services Products (UK) Limited
	Tyco European Metal Framing Limited
	Tyco Fire & Integrated Solutions (UK) Limited
	Tyco Fire & Security Holdings UK Limited
	Tyco Fire Products Manufacturing Limited
	Tyco Holdings (UK) Limited
	Tyco Integrated Systems Limited
	Valid Access Limited
	Visonic Limited
	Wormald Holdings (U.K.) Ltd.
	Wormald Industrial Property Ltd.



TYCO INTERNATIONAL PLC - SEPTEMBER 25, 2015
COUNTRY	ENTITY NAME	STATE
United States	Carter Brothers, LLC	FL
	CEM Access Systems, Inc.	TX
	Central CPVC Corporation	AL
	Central Sprinkler LLC	DE
	Chagrin H.Q. Venture Ltd. (50%)	OH
	Chagrin Highlands Inc.	OH
	Chagrin Highlands Ltd. (50%)	OH
	Chemguard, Inc.	TX
	Connect 24 Wireless Communications Inc.	DE
	CVG Holding Corp.	DE
	Detcon Holdco, Inc.	DE
	Detcon, Inc.	TX
	Digital Security Controls, Inc.	NY
	DSA Holdco, Inc.	DE
	Elpas, Inc.	DE
	Exacq Technologies, Inc.	IN
	Fire Products GP Holding, LLC	DE
	G-I Great Lakes, A Series of Greenleeds LLC	DE
	G-I Mid Atlantic, A Series of Greenleeds LLC	DE
	G-I MidWest, A Series of Greenleeds LLC	DE
	G-I New York, A Series of Greenleeds LLC	DE
	G-I Other Risk Centers, A Series of Greenleeds LLC	DE
	GMI Holdco, Inc.	DE
	Green Meadow Insurance Corp.	DE
	Greenleeds LLC	DE
	Grinnell LLC	DE
	Grinnell Pacific, A Series of Greenleeds LLC	DE
	Grinnell QSF, LLC	DE
	GSF Holdings, LLC	DE
	GSF Management Co, LLC	DE
	Haz-Tank Fabricators, Inc.	TX
	Industrial Safety Technologies, LLC	DE
	Infrared Systems Group USA, Inc.	GA
	Infrared Systems Group, LLC	GA
	Integrated Systems and Power, Inc.	DE
	Master Protection, LP	DE
	Obsidian HCM Holdings, Inc.	DE
	Obsidian HCN International Corporation	DE
	Presidia (International) Insurance Company	VT
	Presidia (US) Insurance Company	VT
	Presidia Insurance Company	VT
	Qolsys, Inc. (51%)	DE
	Retail Expert, Inc.	DE
	Scott Figgie LLC	DE
	Scott Technologies Foundation	OH
	Scott Technologies, Inc.	DE
	Senelco Iberia, Inc.	DE
	Sensormatic Asia/Pacific, Inc.	DE



TYCO INTERNATIONAL PLC - SEPTEMBER 25, 2015
COUNTRY	ENTITY NAME	STATE
	Sensormatic Electronics (Puerto Rico) LLC	DE
	Sensormatic Electronics, LLC	NV
	Sensormatic International, Inc.	DE
	Shurjoint America, Inc.	NV
	Simplex Time Recorder Co.	NV
	Simplex Time Recorder LLC	MA
	SimplexGrinnell Holdings LLC	DE
	SimplexGrinnell LP	DE
	STI Licensing Corporation	DE
	STI Properties, Inc.	DE
	STI Properties, Ltd. (51%)	OH
	STI Risk Management Co.	FL
	STR Grinnell GP Holding, LLC	NV
	Tyco Finance Corp.	DE
	Tyco Fire & Security (US) Management, Inc.	NV
	Tyco Fire & Security LLC	NV
	Tyco Fire & Security US Holdings LLC	DE
	Tyco Fire Products LP	DE
	Tyco Fire Protection LLC	DE
	Tyco Holdings of Nevada, Inc.	NV
	Tyco Integrated Security LLC	DE
	Tyco International (US) International Holdings B, LLC	DE
	Tyco International Finance US LLC	NV
	Tyco International Management Company, LLC	NV
	Tyco International PLT Holdings, Inc.	DE
	Tyco International US China Inc.	DE
	Tyco Receivables Corp.	DE
	Tyco Worldwide Services, Inc.	DE
	Visonic Inc.	CT
	Water Holdings Corp.	DE
	White Mountain Group Holdings, Inc.	NV
	White Mountain Insurance Company	VT
	WillFire HC, LLC	DE

Uruguay	ADT Security Services S.A. (Uruguay)
	LPG America Latina Sociedad Anonima
	Visonic Latin America S.R.L.
	Visonica S.A.

Venezuela	Ansul de Venezuela C.A.
	Grinnell Sistemas de Proteccion Contra Incendio S.A. (Venezuela)