Enhance the security and convenience of your property with this Wireless Intercom Doorbell system, designed for reliable communication and easy use across various settings including homes, hotels, villas, factories, and hospitals. Crafted from durable ABS material, this comprehensive package includes one outdoor doorbell and two indoor doorbells, offering seamless interaction between your visitors and indoor occupants. Key Features: · Wide Compatibility: Ideal for multi-story buildings and diverse environments such as residential homes, commercial hotels, villas, industrial factories, and healthcare facilities. · Complete Communication Kit: Features one outdoor doorbell with built-in microphone and speaker, plus two indoor doorbells that ring simultaneously when the outdoor button is pressed, enabling both notification and two-way voice intercom communication. · Long Wireless Range with Strong Penetration: Powered by an intelligent intercom chip, the system supports barrier-free communication up to 1000 meters (approximately 3280 feet), efficiently covering distances from the 1st to the 8th floor in residential or commercial buildings. · Smart and Intuitive Design: Equipped with clear intercom and power LED indicators that provide real-time operational status, ensuring effortless use and quick understanding of system functions. · Reliable Battery Performance: Both outdoor and indoor units are powered by rechargeable 1800mAh lithium batteries. The outdoor doorbell can operate for up to 8 months with average daily usage (pressing 5 times and 2 minutes of talk time), while indoor units provide approximately 3-5 days of continuous use per charge. · Weather-Resistant Outdoor Unit: The outdoor doorbell features an IP54 waterproof rating, ensuring durability and stable performance in various weather conditions. · Convenient Size: The outdoor unit measures approximately 121.5 x 61.5 x 31.3mm (4.8 x 2.4 x 1.2 inches), while each indoor doorbell measures about 125 x 70 x 56mm (4.9 x 2.8 x 2.2 inches), compact enough for easy installation and placement. Specifications: · Item Type: Wireless Intercom Doorbells · Material: ABS · Uses: Homes, Hotels, Villas, Factories, Hospitals · Package Includes: 1 Outdoor Doorbell, 2 Indoor Doorbells · Outdoor Doorbell Battery: 3 x Built-in Rechargeable Lithium Batteries (1800mAh each) · Outdoor Working Temperature: -20℃ to 50℃ · Wireless Distance: 1000m (Barrier Free) / 20-50m (With Barriers) · Wireless Frequency: 410-490 MHz · Outdoor Working Hours: More than 8 months per full charge · Outdoor Waterproof Grade: IP54 · Outdoor Size: Approx. 121.5 x 61.5 x 31.3 mm (4.8 x 2.4 x 1.2 in) · Indoor Doorbell Working Hours: About 3-5 days per charge · Indoor Waterproof Grade: Not Applicable · Indoor Size: Approx. 125 x 70 x 56 mm (4.9 x 2.8 x 2.2 in) This wireless intercom doorbell system delivers outstanding communication performance with strong signal penetration, long operating times, and user-friendly features, making it an excellent choice for enhancing access control and visitor management in various environments.