Ei Electronics Ei146-10, Optical detector, Wired, White, 85 dB, Surface-mounted, AC
Ei Electronics Ei146-10. Detector type: Optical detector, Connectivity technology: Wired, Product color: White. Power source: AC, Input voltage: 230 V, Battery voltage: 9 V. Diameter: 5.83" (14.8 cm), Height: 2.13" (54 mm)