Enhance your home or workplace security with this advanced Portable Wireless Doorbell System featuring a reliable 2.4GHz signal for stable and smooth transmission up to 200 meters. Designed for seamless dual-way intercom communication, this system allows you to hear visitors clearly and respond instantly from indoors, making it perfect for homes, factories, hotels, markets, and more. Key Features: · Stable 2.4GHz Wireless Transmission: Ensures uninterrupted and clear signal with an effective range of up to 200 meters, providing flexible placement for both indoor and outdoor units. · Dual-Way Intercom Communication: When the call button on the outdoor unit is pressed, the indoor bell rings immediately, allowing you to respond by pressing the talk button for clear two-way conversations. · High Sensitivity Microphone and Speaker: Built-in microphone and speaker deliver crisp, smooth audio input and output, ensuring clear sound quality during communication. · Adjustable Volume and Customizable Ring Tones: Loudspeaker offers powerful sound with adjustable volume settings and multiple ringtone options to suit your preferences. · Compact and Elegant Design: Ultra-mini size units offer excellent portability and easy installation, blending seamlessly into any environment without occupying much space. Specifications: · Indoor Machine Voltage: 5V USB Direct Power Supply · Power Supply for Outdoor Bell: 4 x AAA Batteries (Not Included) · Wireless Frequency: 467.6375MHz · Transmission Distance: Indoor to Outdoor up to 200 meters; Outdoor Bell effective range 5–50 meters · Working Time: Up to 4 months on a full battery charge · Operating Temperature: -20°C to 55°C · Size (Indoor & Outdoor Bell): Approx. 100 x 60 x 16 mm (3.9 x 2.4 x 0.6 inches) · Package Size: Approx. 170 x 120 x 25 mm (6.7 x 4.7 x 1.0 inches) · Package Weight: 150g Package Includes: · 1 x Indoor Bell · 1 x Outdoor Bell · 2 x Glue Pads for mounting · 1 x Screwdriver · 1 x User Manual This Portable Wireless Doorbell System combines convenience, clear audio communication, and a reliable long-distance wireless connection, making it an ideal choice for improving accessibility and security in various settings. Its compact design and easy installation allow you to set up a functional intercom system quickly and effortlessly.