1、Advanced Digital Encoding: The wireless calling system features advanced digital encoding technology, supporting up to 400 call buttons with a package including 10. It ensures a stable and extended transmission range. 2、Large Display Screen: Equipped with an extra large display screen, the nurse call system provides real time and accurate call information. It offers a visible range of over 50 meters, enhancing service efficiency. 3、Adjustable Volume Levels: Designed with 30 levels of volume adjustment, the paging system allows customization to suit different environments, making it versatile for various settings. 4、Customizable Design: With an IPX4 rain proof rating, the wireless caregiver pager system ensures reliability and durability. It supports personalized naming of call buttons for easy identification. 5、Compact And Stylish Design: The wireless calling system boasts a stylish and portable design, ideal for wide applications in hotels, restaurants, hospitals, nurse homes, and factories. Item Type: Wireless Calling System Material: ABS Display Receiver Parameters: Operating Frequency: 433.92MHz Operating Voltage: DC 5V 1A Operating Current: <130mA Standby Current: <550mA Reception Sensitivity: -105dBm Decoding: Learning Code Rain Proof Rating: IPX4 Operating Temperature: -20℃ to 60℃ Call Buttons Parameters: Operating Frequency: 433.92MHz Battery Type: 2 x CR2032 Batteries (Included) Single Battery Capacity: 225mAh (Included) Transmission Current: 10mA±3mA Standby Current: <1uA Open Area Range: >200 Meters Buttons Lifespan: 1 Million Presses Rain Proof Rating: IPX4 Operating Temperature: -20℃ to 55℃ Single Key: CALL 1 x Display Receiver 10 x Call Buttons 10 x Adhesive Sheet 1 x Adapter 1 x Instruction Manual