General description This Wireless Outdoor Doorbell Kit includes 1 transmitter and 1 receiver, designed for easy installation and reliable performance. It features a long-range signal that works effectively within 300 meters in open spaces, ensuring you won't miss a visitor. The doorbell is made from high-quality ABS material, making it non-toxic and safe for use. Technical specifications Operating range: 300 meters in open spaces Volume levels: 5 adjustable levels from 0 dB to 85 dB Melodies: 36 different melodies available Transmitter battery life: over 15 months Transmitter durability: withstands more than 100,000 clicks Installation Receiver: Simply plug into an electrical outlet, no assembly or batteries required Transmitter: Can be fixed with provided screws or attached using included adhesive Usage Transmitter is IP44 waterproof, suitable for outdoor use Protects against dust, rain, and high temperatures LED indicators on both transmitter and receiver flash blue when activated