• Easy to pair and connect for quick and hassle-free installation anywhere in your home. • Range of over 1000 feet in open areas, tested to work through doors and walls. • Ideal for large houses, apartments, offices, and warehouses. • Battery life of up to 3 years, you'll never miss a doorbell. • Kit includes: 1 wireless doorbell transmitter, 2 plug-in receivers, double-sided mounting tape, anchors, screws, and A23 battery. • Sleek and modern LED indicator lights on the transmitter and receiver, with 4 volume settings. • Ability to set each door with a different chime or ringtone. • Waterproof and weather-resistant up to -4 °F/140 °F, for a durable system. • Sound chip with 52 high-quality chime tones and 4 volume levels. • Memory chip that stores your chime selections even when disconnected or turned off. • Product dimensions: 3.8 cm wide, 8.9 cm high, 8.3 cm long. • Product weight: 0.196 kg.