Used level sensors

Johnson Controls J2351T Addressable Photoelectric Smoke Detector, FlashScan [New]

• Manufacturer: Johnson

. . . . . J2351T: White, same as J2351 but includes a built-in 135°F (57°C) fixed-temperature thermal device, FlashScan only, White, low-profile intelligent photoelectric sensor, FlashScan onlyThe Johnson Control...