661—210.1 (100) Definitions. The following definitions apply to rules 661—210.1(100) through 661—210.5(100):
“Approved”  means that the equipment has been approved or listed for a specific use by an independent testing laboratory or organization of national reputation.
“Commercial grade smoke detection system”  means a system of smoke detectors in which each detector is listed to Underwriters Laboratory Standard 268, Smoke Detectors for Fire Alarm Systems, or to another standard approved by the state fire marshal. Sensors in a commercial grade smoke detection system shall be located so as to provide coverage at least equivalent to that which would be provided by smoke detectors installed as required in subrule 210.3(11).
“Dual sensor smoke detector”  means a smoke detector which contains both an ionization sensor and a photoelectric sensor and which is designed to detect and trigger an alarm in response to smoke detected through either sensing device, or a smoke detector which has at least two sensors and which is listed to Underwriters Laboratory Standard 217, Single and Multiple Station Smoke Alarms, or to another standard approved by the state fire marshal.
[ARC 8550B, IAB 2/24/10, effective 4/1/10]