907.20.4 Method.
FC § 907.20.4
To verify that each smoke detector is within its listed and marked sensitivity range, it shall be tested using one of the following methods or types of equipment, and detectors found to have a sensitivity outside the listed and marked sensitivity range shall be cleaned and recalibrated or replaced: 1. A calibrated test method; 2. The manufacturer's calibrated sensitivity test instrument; 3. Listed control equipment arranged for the purpose; 4. A smoke detector/control unit arrangement whereby the detector causes a signal at the control unit where its sensitivity is outside its acceptable sensitivity range; or 5. Another calibrated sensitivity test method acceptable to the commissioner. Exceptions: 1. Detectors listed as field adjustable shall be allowed to be either adjusted within the listed and marked sensitivity range and cleaned and recalibrated or they shall be replaced.
2.This requirement shall not apply to single-station smoke alarms.
