1、Using radio frequency wireless technology, the system is stable, and the wireless receiving distance is long. 2、The wireless pager has a stylish appearance, novel design, easy to move, and 30‑level digital control volume is adjustable. 3、The display screen can display the time, year, month, and day. The receiver supports 400 pagers, and supports one‑button or 4‑button pagers. 4、The call button word can be selected, single or list display mode, you can name the call button beginning with ABCDEF letters. 5、This call button uses advanced micro‑processing chips to make its performance stable and reliable, and is widely used in homes, hotels, bars, etc. Item Type: Wireless Pager Material: ABS Working Current: 100mA±10mA Receiving Sensitivity: 105dB Decoding: Learning the Code Waterproof Rating: IPX4 Working Temperature: -20℃~ 60℃ Button Transmitter Parameters: Operating Frequency 433.92MHz Material: ABS Battery: Two Built-in CR2032 Lithium Batteries (included) Battery Capacity: 80mAh Emission Current: 10mA±3mA Standby Current: <1uA Open Distance: >200m Keys: 1 Million Times Waterproof Rating: IPX4 Working Temperature: -20℃~ 55℃ One Touch: Call 1 X Display Receiver 20 X Push Button Transmitters 20 X Films 1 X User Manual 1 X Adapter