Enhance your communication with this advanced Wireless Voice Caller, designed to provide reliable and flexible intercom solutions for various environments. Featuring two independent usage modes—press the green button to listen or press and hold the PTT button to speak directly—this system adapts to your communication preferences with ease. Its impressive transmission distance of up to 1000 meters in open areas and 20 to 50 meters through walls (up to 8 floors) ensures strong practicality and wide applicability for homes, offices, warehouses, and more. Key Features: · Dual Usage Modes: Offers both listen and talk functions via a green button or PTT (Push-To-Talk) button, catering to different communication needs. · Long Transmission Range: Supports up to 1000 meters (3280.8 feet) in open space and 20-50 meters (65.6-164 feet) through walls and multiple floors, ensuring clear communication across various settings. · Built-in Polymer Lithium Battery: Equipped with a 3.7V 1800mAh large-capacity rechargeable battery, providing up to 3 days of working time on a single charge and lasting about one week with typical intermittent use. · Frequency Gear Switching: Features 0 gear for shutdown, A gear for 462MHz frequency, and B gear for 434MHz frequency, allowing you to switch frequencies to avoid interference during calls. · Adjustable Sound Settings: Includes 38 selectable ringtones with 3 levels of ringtone volume and 3 levels of call sound volume, customizable for optimal listening comfort. · High-Quality Button Design: Buttons crafted from plastic and silicone with a high gloss UV finish ensure a smooth, comfortable touch experience. · Compact and Portable: The wireless voice caller measures approximately 116 x 56 x 18mm (4.6 x 2.2 x 0.7 inches), while the charging base is compact at 70 x 56 x 29mm (2.8 x 2.2 x 1.1 inches), making it easy to place and carry. Specifications: · Item Type: Wireless Voice Caller · Battery: Built-in Polymer Li Battery 3.7V 1800mAh · Power Supply: DC 5V 1A · Working Temperature: -20℃ to 55℃ · Transmission Distance: Approx. 1000m (3280.8ft) open area; 20-50m (65.6-164ft) through walls, 1-8 floors · Working Frequency: 410-490MHz · Working Time: About 3 days per full charge · Charging Time: Approx. 5 hours for full charge · Ringtones: 38 selectable options · Ringtone Volume: 3 levels adjustable · Call Volume: 3 levels adjustable · Product Size: Approx. 116 x 56 x 18mm (4.6 x 2.2 x 0.7in) · Charging Base Size: Approx. 70 x 56 x 29mm (2.8 x 2.2 x 1.1in) Package Includes: · 1 x Wireless Voice Caller This Wireless Voice Caller offers a practical, user-friendly communication solution with long-range transmission, customizable sound settings, and durable battery life. Its versatile frequency options and ergonomic design make it ideal for seamless communication in homes, offices, warehouses, and multi-floor buildings. Stay connected effortlessly with this reliable and portable wireless intercom system.