Enhance communication efficiency with this advanced Wireless Calling System, engineered for stable, long-distance performance and versatile use across various environments. Crafted from durable ABS material, the system features high-performance wireless technology operating at 433.92MHz, delivering strong anti-interference capability and reliable connectivity with an open distance exceeding 200 meters (656 feet). Ideal for homes, hotels, restaurants, bars, factories, coffee shops, nursing homes, and more, this wireless paging system streamlines call management and improves workflow with clear visual call notifications. Key Features: · Long-Distance and Stable Connection: Utilizes cutting-edge wireless technology with a receiving sensitivity of 105dB to guarantee stable signals and minimal interference, ensuring calls are received promptly across large areas. · Multi-Scenario Application: Suitable for a wide variety of places including hospitality, healthcare, industrial, and commercial settings, offering versatile functionality for different operational needs. · Stylish and Portable Design: The receiver display boasts a modern, sleek look to complement any environment, while the compact call keys are lightweight and portable, allowing users to call conveniently anytime and anywhere. · User-Friendly Interface: The display clearly shows the date and time (year, month, day), allowing for accurate call time recording to enhance management and improve work efficiency. · IPX4 Waterproof Rating: Both the receiver and call keys are rated IPX4 waterproof, safeguarding against splashes and ensuring reliable use in various conditions. · Large Capacity and Flexible Installation: Equipped with 30 call keys, which can be easily mounted on tables or walls using included stickers or carried in pockets for flexibility in usage. · Durable Battery Life: Call keys use two CR2032 lithium batteries (included) with a capacity of 240mAh, supporting up to 1 million presses, combined with low standby current for long-lasting performance. Specifications: · Item Type: Wireless Calling System · Material: ABS · Display Receiver (SU 620):   – Working Frequency: 433.92MHz   – Size: Approx. 210 x 140 x 30mm (8.3 x 5.5 x 1.2in)   – Receiving Sensitivity: 105dB   – Decoding: Learning Code   – Waterproof Grade: IPX4   – Working Temperature: -20℃ to 60℃ · Transmitter:   – Working Frequency: 433.92MHz   – Battery Type: 2 x CR2032 Lithium Batteries (Included)   – Battery Capacity: 240mAh   – Transmitting Current: 10mA±3mA   – Standby Current: <1uA   – Open Distance: Over 200m / 656ft   – Key Life: 1 Million Presses   – Waterproof Grade: IPX4   – Working Temperature: -20℃ to 60℃ · Single Key Function: CALL Package Includes: · 1 x Wireless Display Receiver · 30 x Wireless Call Keys with Batteries This Wireless Calling System offers a reliable, waterproof, and easy-to-use solution for seamless communication in diverse settings. Its long-range connectivity, durable design, and versatile installation options make it an essential tool for improving response times and operational efficiency in any professional or personal environment.