First Alert 10-Year Battery 2-Pack Battery-operated Photoelectric Sensor Smoke Detector Item #749769 | Model #WS84503 Thermoplastic top and backbody are

Thermoplastic top and backbody are virtually unbreakable to deliver years of durable performance

1/2-in push-to-connect inlet x 3/4-in male garden hose thread outlet

Replaceable seats and seat discs

stapled fibers with flagging to allow the broom to pick up finer particles

First Alert 10-Year Battery 2-Pack Battery-operated Photoelectric Sensor Smoke Detector Item #749769 | Model #WS84503 Thermoplastic top and backbody areThe First Alert SM210 10 Year Sealed Battery Smoke Alarm with Slim Profile Design is available in a convenient two pack. The SM210 smoke alarm features First Alert's Precision Detection advance sensing technology and meets new industry standards. This slim profile alarm is easy to install, and the 10 year sealed battery means no battery replacements are required. Precision Detection technology helps reduce cooking nuisance alarms and provides early