Enhance your home security and convenience with this advanced Wireless Doorbell Chime, featuring RF433 infrared transmission technology that operates without the need for internet or WiFi. Boasting an impressive ultra-far transmission range of up to 300 meters (984 feet), this doorbell system ensures reliable connectivity across large distances, perfect for any home or office environment. Key Features: · **Wireless and Long-Range Transmission:** Utilizes RF433 infrared technology for stable and interference-free communication without internet dependency, covering distances up to 300m/984ft. · **Real-Time Intercom Function:** Enables instant calling and answering with encrypted signals for privacy and clear sound quality. The system offers 4 adjustable volume levels to suit your preferences. · **Weather-Resistant Outdoor Chime:** Built with an IP44 waterproof rating, the outdoor unit withstands rain and harsh weather conditions, ensuring durability and long-term use. Installation is simple and hassle-free with no wiring or drilling required. · **One-Touch Operation:** Designed for ease of use by all family members, including children and elderly, with one-touch calling and answering functionality that enhances safety and convenience. · **Multi-Indoor Unit Compatibility:** One outdoor chime can connect to multiple indoor units (this package includes 1 indoor chime). When the doorbell is pressed, all connected indoor units ring simultaneously. Indoor units also support intercommunication, allowing family members to talk to each other in different rooms in real time. · **Type-C Charging and Long Battery Life:** Both indoor and outdoor units feature built-in 800mAh rechargeable lithium batteries. The indoor unit, equipped with a charging base and Type-C port, provides 3-7 days of usage per charge, while the outdoor chime can last up to 6 months on a full charge, offering exceptional standby time and convenience. Specifications: · Color Options: Black / White · Main Material: Durable ABS Plastic · Charging Port: Type-C · Battery Capacity: 800mAh (each unit) · Power Consumption: 0.5W · Outdoor Chime Dimensions: 5.1 x 2.4 x 10 cm (2.01 x 0.94 x 3.93 in) · Indoor Unit Dimensions: 5.6 x 2.4 x 11.9 cm (2.20 x 0.94 x 4.68 in) · Weight: Approximately 300g (10.58 oz) Package Includes: · 1 x Outdoor Wireless Doorbell Chime · 1 x Indoor Unit with Charging Base This wireless doorbell chime system combines ease of installation, robust long-distance communication, and practical intercom features to provide a reliable and user-friendly solution for home and office security. Its weatherproof design and long-lasting rechargeable batteries make it an ideal choice for seamless and secure visitor notifications.