Shop Napco Wireless Environmental Sensors at GeoArm Security. Discover genuine Napco wireless environmental sensors, including flood detectors, water leak sensors, freeze sensors, and temperature sensors designed to help protect residential and commercial properties from costly environmental damage. Featuring reliable wireless performance and seamless integration with compatible Napco alarm control panels, these smart sensors provide early detection and enhanced connected property protection. Napco wireless environmental sensors support GeoArm 24/7 Professional UL-listed central station monitoring or DIY self-monitoring with no long-term contract.