IGNITION INTERLOCK DEVICE: Person convicted of DUI must install an IID in any vehicle to be operated by the person and must also use the device for six months after the end of the suspension period before becoming eligible for full reinstatement. [ return to top of glossary
Intermittent Ignition Device. The electronic control and switching device used in electronic ignition heaters to operate the control circuit and automatic gas valve.
Intermittent Ignition Device. IIDs are linked to a furnace or boiler's thermostat and light the pilot by means of a spark or other heat source when needed. IIDs are more fuel-efficient than the traditional approach of maintaining a continuously burning pilot flame.