Display 3 groups of double-digit number. Registered number can not be register again,  to avoid incorrect and repeated registration to the same number. 

This is a receiver only, buy with one-button pager or multi-button pager can work.

-    Dimensions：7.95*5.12*1.18 inches (202mm * 130mm *30mm)

-    Outer material: ABS

-    Decoding type: Registration method

-    Number of display : 3

-    Power supply: AC120V/60HZ-DC12V/1A

-    Prompt music length: 01～15 kinds (one figure means two seconds,30 seconds max)

-    Receiver sensibility: -114dbm

-    Frequency：433Mhz

-    Call button capability: 199

-    Prompt modes: Dingdong、Alarming sound、 voice report

-    Display time: 1～99 seconds,00 means infinite

-    English letter beginning display: A, B , C, D , E,F,H,P,L,J.