System Sensor SENS-RDR


Sensitivity reader for i³ series smoke detectors

Availability: Estimated 6 Weeks

Condition: New
Brand: System Sensor
Status: Active
SKU: 31775
Manufacturer Part #: SENS-RDR


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 percent- per-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.

Additional information

Weight 0.5 lbs
Dimensions 1.125 × 1.375 × 7.125 in




Production Status



  • 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


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i³ Series Sensitivity Reader


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