ISO-7240-27 Complete Document History
Fire detection and alarm systems - Part 27: Point type fire detectors using a smoke sensor in combination with a carbon monoxide sensor and, optionally, one or more heat sensors

Complete Current Edition:
   2ND EDITION - Part 27: Point type fire detectors using a smoke sensor in combination with a carbon monoxide sensor - May 1, 2018

Obsolete Revision Information:
   1ST EDITION - Part 27: Point-type fire detectors using a scattered-light, transmitted-light or ionization smoke sensor, an electrochemical-cell carbon-monoxide sensor and a heat sensor - April 1, 2009