Siemens 500-081806 Ionization Smoke Detector DI-3
The Siemens DI-3 detector is a plug-in, ionization detector and is designed for two wire system operation. The DI-3 is designed with adjustable sensitivity. The Siemens DI-3 consist of a self- compensating dual ionization chamber and a highly stable solid state amplifier-switching circuit. One chamber detects the presence of combustion products, the second chamber serves as a reference, to stabilize the detector’s sensitivity for changes in environmental conditions. As products of combustion enter the sampling chamber, the chamber current is reduced producing a voltage change. At the time the voltage range exceeds the pre-determined threshold, an alarm is signaled to the control unit. The detector locks in upon alarm and must be reset from the control panel.
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The Siemens DI-3 ionization detectors have been discontinued by the manufacturer. As an option, you can replace the DI-3 detectors with the Siemens OP121 detector and Siemens DB-11 base ! This will allow continued operation of your Siemens system, and at a huge cost savings –
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|Dimensions||6.5 × 6.5 × 2.5 in|
Base, Detector Base, Smoke Detector