BSEN50134-5:2021 BSI Standards Publication Alarm systems-Social alarm systems Part 5:Interconnections and munications bsi. BSEN50134-5:2021 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 50134-5:2021. It supersedes BS EN 50134-5:2004 which will be withdrawn on 2 February 2022. The UK participation in its preparation was entrusted to Technical Committee GW/1 Electronic security systems and products. A list of organizations represented on this mittee can be obtained on request to its mittee manager. Contractual and legal considerations This publication has been prepared in good faith however no representation warranty assurance or undertaking (express or implied)is or will be made and no responsibility or liability is or will be accepted by BSI in relation to the adequacy accuracy pleteness or reasonableness of this publication.All and any such responsibility and liability is expressly disclaimed to the full extent permitted by the law. This publication is provided as is and is to be used at the recipient's own risk. The recipient is advised to consider seeking professional guidance with respect to its use of this publication. This publication is not intended to constitute a contract.Users are responsible for its correct application. ©The British Standards Institution2021 Published by BSI Standards Limited 2021 ISBN9780539041842 ICS13.320 Compliance with a British Standard cannot confer immunity from legal obligations. This B...