Legrand 94251, Wireless, 80 dB, IP20, IP44, 50 m, White, Plastic Legrand 94251. Connectivity technology: Wireless, Noise level: 80 dB, International Protection (IP) code: IP20, IP44. Product colour: White, Housing material: Plastic, Placement: Wall. Indoor unit power type: Battery, Outdoor unit power type: Battery. Width: 65 mm, Depth: 30 mm, Height: 80 mm