Digital Receiver: The receiver adopts digital display, you can clearly know the location of the call signal, suitable for home, hospital, nursing home, service agency, etc No distance limit: This advanced nursing pager adds features to traditional pagers by connecting to Wifi, sending wireless signals to your mobile phone, solving the problem of unlimited signal range, allowing you to receive signals anytime, anywhere Easy to set up: You can edit the name of each button on the app, adjust the duration of the ring time/volume level No need to pay anything: Connect to the same WIFI, add the call button to the APP in your phone, the emergency button, and your mobile APP receive a notification. The receiver is responsive and the signal is stable Name:WIFI Digital Display Pager Set Working voltage:5V Quiescent current:less than equal 60mA Alarm current:less than equal 200mA Wireless frequency: 433.92MHz WIFI standard: IEEE 802.11 b/g 2.4GHz Working temperature: -10℃-50℃ (The product appearance and printed words depending on the batch, but this does not affect use) Colour:As Shown Material:ABS Package Contents: 1 * Digital Display Pager 3 * Call Button Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.