VEVOR F103 Restaurant Pager System 18 Pagers, Max 98 Beepers Wireless Calling System, Touch Keyboard with Vibration, Flashing and Buzzer for Church, Nurse,Hospital & Hotel

Here is the manual link :http://qiniu.vevor.net/20200618084650556.pdf.

Remove the transparent sheet on the front of the handset, and then remove the advertising paper. There is a small button, short press the button several times, and press all 5 lights off.