1、Reliable Performance: The wireless calling system adopts RF wireless technology, which ensures system stability and long wireless reception distance 2、Convenient and Practical: The wireless caregiver pager call system can display the time, year, month and date, with a stylish appearance and easy to move 3、Call Button: The display receiver supports 400 pagers, the call button word can be selected, single or list display mode 4、Regulable and Nameable: The patient pager system uses a call button that can be named with letters beginning with ABCDEF, and the 30 level numerical control volume is regulable 5、Scope of Application: The wireless calling system can be used in homes, hotels, bars, restaurants, factories, clubs, hospitals, and offices, etc Item Type: Wireless Calling System Display Receiver: Material: ABS Operating Frequency:433.92MHz Working Current: <130mA Standby Current: <550mA Modulation Method: ASK Receive Sensitivity: Better Than -105dB Decoding: Learning to Coding Waterproof Grade: IPX4 Working Temperature: -20℃ to 60℃ Button Launcher: Material: ABS Operating Frequency 433.92MHz Alkaline Battery Model: 12V23A (included) Battery Capacity: 30mAh Emission Current: 10mA±3mA Standby Current: <1uA Open Distance: >200meters/218.7yd Keystrokes: 1 Million Times Waterproof Grade: IPX7 Working Temperature:-20℃ to 55℃ Single Key: Call (CALL) 1 x Receiver 30 x Button Launcher 30 x Film 1 x User Manual 1 x Adapter