Ei Electronics Ei146RF, Optical detector, Wireless, White, 85 dB, Surface-mounted, AC
Ei Electronics Ei146RF. Detector type: Optical detector, Connectivity technology: Wireless, Product color: White. Power source: AC, Input voltage: 230 V, Battery voltage: 9 V. Diameter: 5.83" (14.8 cm), Height: 2.76" (70 mm)