1、Stable and Long Range Signal Transmission: The wireless call system offers highly resistant to interference, with a system signal range covering up to 1000 feet in an open area. Utilizing digital coding technology, it is compatible with both learning code and common code chips, ensuring a stable system with a long reception range. 2、Comprehensive and Practical Functions: The wireless paging system supports up to 1000 wireless call buttons, making it easy to configure buttons, delete buttons, adjust volume, and clear all numbers on the paging machine. 3、Long Standby Time: The wireless call buttons can be easily installed with stickers on tables or walls, or can be carried in a pocket or hung around the neck. This enables customers or patients to quickly and conveniently request assistance, with a standby time of 6‑12 months for the call buttons. 4、Wide Application: The wireless calling system is suitable for use in restaurants, nursing homes, cafes, supermarkets, hotels, hospital wards, emergency centers, banks, schools, factories, construction sites, and more. 5、Waterproof Button Design: The wireless call buttons and ABS shell are rugged, and the buttons are pre paired with the receiver for easy plug and play functionality, providing a reliable and convenient solution for communication needs. Item Type: Wireless Call System Material: ABS+PVC Display Receiver Parameter: Operating Frequency: 433.92MHz Size: Approx. 210x140x30mm / 8.27x5.51x1.18in Receiver Sensitivity: -105dB Decoding: Learning Code Waterproof Level: IPX4 Working Temperature: -20℃ - 60℃ Button Transmitter Parameter: Frequency: 433.92MHz Battery Type: 12V 23A Battery Capacity: Alkaline Battery 60mAh x 30 (included) Transmitting Current: 10mA±3mA Standby Current: <1uA Open Distance: >200 meters Key Lifespan: 100 million times Waterproof Level: IPX4 Working Temperature: -20℃ - 60℃ Single Key Function: Call 1 x Display Receiver 1 x Power Cord 1 x User Manual 30 x Buttons 30 x Double Sided Tape