Enhance your home or office security with this Wireless Smart Voice Doorbell, featuring two-way voice intercom functionality to allow seamless communication between you and your visitors. This advanced wireless doorbell system includes two indoor receivers and one outdoor push button, providing a large transmission range of up to 200 meters outdoors and 5-50 meters indoors without obstacles, ensuring clear and stable voice transmission throughout your space. Key Features: · Two-Way Voice Intercom: Enables real-time conversation with visitors, letting you know who is at your door and allowing you to inform them when you are coming or ask them to wait. · Dual Indoor Receivers and One Push Button: The wireless connection between receivers and push button ensures easy communication and flexible placement to suit your needs. · Long Battery Life: Indoor units support built-in rechargeable lithium batteries lasting approximately 48 hours per charge, while the outdoor push button operates on 4 AAA batteries (not included) with an estimated battery life of up to 4 months. · Wide Application: Perfect for both home and office use, especially beneficial for elders who may require additional time to answer the door, enhancing overall convenience and accessibility. · Easy Installation and Simple Operation: The visitor presses the outdoor doorbell button to ring; once the indoor receiver rings, press the receiver button once to connect, hold to talk, and release to end the conversation. · Stable Signal Transmission: Operating at a wireless frequency of 467.6375MHz, this system ensures reliable communication with minimal interference. Specifications: · Indoor Unit Input Voltage: 5V 1A · Outdoor Unit Power Supply: 4 AAA batteries (not included) · Indoor Unit Power Supply: Built-in rechargeable lithium battery (included) · Wireless Frequency: 467.6375MHz · Transmission Distance: Outdoor up to 200m; Indoor 5-50m (without obstacles) · Waterproof: No waterproof function · Outdoor Unit Working Time: Approximately 4 months · Indoor Unit Working Time: Approximately 48 hours per charge · Color: Gold · Material: Plastic + ABS · Operating Temperature: -20℃ to 55℃ Package Includes: · 2 x Indoor Units (Receivers) · 1 x Outdoor Unit (Push Button) · 1 x Screwdriver · 3 x Double-sided Adhesive Strips · 2 x USB Charging Cables · 1 x User Manual (English) This Wireless Smart Voice Doorbell system offers a practical, user-friendly solution for enhancing communication with visitors while improving security and convenience. Its reliable wireless range, long battery life, and easy installation make it an ideal addition for any home or office environment.