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Intelligent Detection Devices <br />Photoelectric Smoke Detector <br />Model OP921 <br />ARCHITECT AND ENGINEER SPECIFICATIONS <br />• Compatible with Siemens Model'H'-series devices on the same loop <br />(with Model FC9-series fire -alarm control panels) <br />• Compatible with Model 8720 / DPU (device programmer / loop tester) <br />• Utilizes advanced microprocessor -based signal processing <br />• Extended temperature and humidity operating range <br />• Each detector is self -testing: <br />• self monitored for sensitivity within OUL Listed limits <br />• complete diagnostics performed every 10 seconds <br />• Polarity insensitive utilizing SureWireTM technology <br />• Compatible with Model DB-11-series mounting bases <br />• Tri-color detector status LED with 360'viewing <br />• Field -selectable application sensitivity profiles <br />• Remote sensitivity -measurement capability <br />• Utilizes advanced signal processing <br />• Superior EMI / RFI immunity <br />• RoHS compliant <br />Product Overview <br />The Photoelectric Smoke Detector (Model OP921) uses <br />state-of-the-art microcontroller circuitry and surface - <br />mount technology for maximum reliability. Model <br />OP921 incorporates an optical sensor using a light - <br />scattering detection principle. The device utilizes <br />advanced software algorithms to analyze the signals, <br />and provides highly stable and accurate smoke <br />detection. <br />Further, Model OP921 uses state-of-the-art <br />microprocessor circuitry with error check; detector self - <br />diagnostics, and supervision programs. <br />Field -Device Programmer / Test Unit <br />Model OP921 is compatible with the Siemens field - <br />device programmer / test unit (Model 8720 / DPU), <br />which is a compact, portable, menu -driven accessory <br />for electronically programming and testing detectors <br />easily and reliably. <br />Cerberus"I PRO <br />Fire Safety & Security Products <br />/�1 <br />• Automatic environment compensation <br />• OUL268A Listed [for direct air -duct use], <br />aULC Pending; CSFM Approved <br />Model 8720 / DPU eliminates the need for cumbersome, <br />unreliable mechanical programming methods, such as dials <br />or switches, and reduces installation and service costs by <br />electronically programming and testing the detector prior to <br />installation. <br />For proper operation of the field -device programmer / test <br />unit, the technician selects the accessory's program mode, <br />and enters the desired address. In turn, Model 8720 / DPU <br />automatically sets and verifies the address, as well as tests <br />the detector. When in the test' mode, Model 8720 / DPU will <br />perform a series of diagnostic tests without altering the <br />address or other stored data, allowing technicians to <br />determine if the detector is operating properly. <br />Model 8720 / DPU operates on AC power or rechargeable <br />batteries, providing flexibility and convenience in <br />programming and testing equipment from practically any <br />location. <br />9902 <br />Photoelectric Smoke Detector <br />Answers for infrastructure SIEMENS <br />