Features: - Long-Range Communication: Wireless two-way intercom system with a tested range of up to 300 meters. Capable of penetrating walls and floors for clear communication between floors (e.g., 1st to 8th floor). Suitable for home, office, or caregiving use. - Slim and Sleek Design: 18mm thickness — slimmer than comparable models. Features a high-gloss UV-treated surface and a plastic + silicone button structure for enhanced tactile feedback. - Intelligent and User-Friendly: Includes talk indicator light and battery level indicator. Comes with a dedicated charging dock for convenient, reliable charging. - High-Capacity Battery: Equipped with an 1800mAh polymer lithium battery. Provides approximately one week of operation under typical usage (5 calls per day, 30 seconds each). Standby time: 3–5 days. - Versatile and Adjustable: Dual frequency options (462MHz and 434MHz) to reduce interference. Offers 38 ringtones and 3 adjustable volume levels for both ringtones and call audio. Note: Two units must be used together; individual operation is not supported. Specifications: - Power Supply: 1800mAh polymer lithium battery - Input Power: DC 5V / 1A - Operating Temperature: –20°C to 55°C - Transmission Distance: Up to 1000 meters in open space; 20–100 meters through walls/floors (1st to 8th floor) - Operating Frequencies: 462MHz (B-band), 434MHz (A-band) - Battery Life: Approx. 1 week per charge (typical use) - Charging Time: Approx. 5 hours for full charge - Standby Time: 3–5 days - Audio Adjustment: 3-level volume control for ringtones and call audio - Ringtones: 38 built-in options - Color Options: Black, White - Product Dimensions: 11.6 × 5.6 × 1.8 cm (4.6 × 2.2 × 0.7 in) - Charging Dock Dimensions: 7 × 5.6 × 2.9 cm (2.8 × 2.2 × 1.1 in) Note: Two units are required for operation; single-unit use is not supported. Colors may vary slightly due to screen settings and lighting conditions. Package Includes: - 2 × Indoor Intercom Units - 2 × Charging Docks - 1 × 2.0 mm Screwdriver - 1 × Charging Station Cable - 1 × Host Charging Cable - 1 × User Manual - 1 × Strong Adhesive Mount