Simple but more than simple Our Restaurant wireless calling system is just that simple No pairing required. No hassle to setup. All call buttons in the package are paired at ex-factory. Simply unbox and remove the insulating films inside and they are ready to function. The central receiver unit displays the called number on screen with a voice alert in selected language or alert tone. CallToU wireless call system is applicable for wide range of environment from temporary nurse call solution to care and service facilities in all sizes. QA: How to connect the keypad and the screen? Hold [FUN] for 3 seconds the screen will show [F-1] Press [ENT], it will show 3 numbers on the screen then press [ENT], the number will flash. Press any number on the Keypad button & press the [Bell] button Then press [ENT] once, [FUN] twice. How to Cancel a Call? In the calling status, press the [ENT] key to cancel the call. If the call has been canceled. The Pager will be on standby status. How to change the broadcast mode? Hold [FUN] for 3 seconds the screen will show [F-1]; press [SET] to show [F-4]; press [ENT] to show [0]; press [SET] to choose 0/1/2; then Press [ENT] to confirm. 0. Dingdong 1. Number XXX 2. Dingdong+Number XXX