| Model | AD4S |
|---|---|
| Type | Smoke Detectors |
| Brand | System Sensor |
Check the listing for details. System Sensor AD4S Smoke Detector Duct Applications NEW 4 wire. Condition: Used. Listed at 35.00 USD. System Sensor AD4S Smoke Detector Duct Applications NEW 4 wire. Condition is Used. Shipped with USPS Priority Mail.