ISO INTERNATIONAL STANDARD 7240-12 Third edition 2022-06 Fire detection and alarm systems Part 12: Line type smoke detectors using a transmitted optical beam Systemes de détection d'incendie et d'alarme - Partie 12: Détecteurs lineaires de fumée utilisant une transmission par faisceaux lumineux Reference number ISO 7240-12:2022(E) ISO @IS02022 IS0 7240-12:2022(E) COPYRIGHT PROTECTED DOCUMENT @ISO2022 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, withoutpriorwrittenpermission.Permission can berequestedfrom eitherIso at theaddress below orIso'smemberbodyinthecountryoftherequester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2022 - All rights reserved