General description This CSPARKV Wireless Doorbell is designed for both home and office use, featuring an IP44 waterproof rating, making it suitable for outdoor installation. It offers a long-range coverage of up to 400 meters in open areas, ensuring reliable performance without interference from other devices. Technical specifications Waterproof and dustproof: IP44 Operating temperature: -20°C to 50°C Range: 400 meters (in open area) Volume levels: 4 (including silent mode) Ringtones: 60 melodious options Installation Easy installation with plug-in receiver Includes double-sided tape and screws for fixing the transmitter (button) Usage Memory function to retain volume and ringtone settings after unplugging Flashing light indicator for silent mode