The SENS-RDR utilizes infrared technology to read the sensitivity of i3 Series detectors.

System Sensor's i3 series sensitivity reader displays sensitivity and status indication readings of all i3 series detectors and other compatible System Sensor smoke detectors. Features An LCD screen that displays sensitivity by percent-per-foot obscuration Connectors for a hand-held device or threaded extension pole Dual LED and sounder indicators A low battery indicator Automatic shut-off after 30 minutes. Sensitivity readers, voltmeters and multimeters are designed to assure smoke detectors are working within their listed and marked sensitivity ranges. With the System Sensor i3 series sensitivity reader (SENS-RDR), an LCD screen displays a detector's exact sensitivity by percentper-foot obscuration. Therefore, unlike many sensitivity readers, voltmeters and multimeters that display only the voltage rating, the step of cross-referencing a voltage reading to a sensitivity range is eliminated with the SENS-RDR. Beyond displaying the sensitivity reading, the LCD screen indicates the status of the detector in alphanumeric text as GOOD, SERVICE or REPLACE. Testing a detector's sensitivity is a simple and quick task. The SENS-RDR connects to hand-held devices and threaded extension poles for those detectors installed out of reach, eliminating the need for a ladder. Within 10 seconds, the dual LED and sounder will alert the installer that the reading has been taken. With dual indicators, the installer won't have to rely on a single LED in areas with visibility issues or a single sounder in areas with audibility issues. The SENS-RDR operates with two AA alkaline batteries. To ensure these batteries are operable, the SENS-RDR has a low battery indicator. And, to maximize battery life, the SENS-RDR automatically shuts off after 30 minutes