First amendment to the Mandatory Standard SI 1220 part 3 dealing with installation instructions and general requirements of fire detection systems. This amendment changes the following:
• Amends paragraph 8.3.5 and correct the phrase "allow to reduce the distances set in paragraph 8.3.1";
• Replaces paragraph 13.3 dealing with the dialler's requirements;
• Replaces the second sentence in paragraph 13.6 and requires that the backup device will function for at least 4 hours.