... and alarm; caller tracing Model:Central Monitoring Station R-2005GSupport Contact ID, DTMF, 4+2EXPRESS, With LCD Display For Showing ... residential compounds. The receiver is capable of receiving signals in CONTACT ID,4+2 EXPRESS,4/2,4 /1 and ... user-friendly interfaces, convenient operation and complete set of functions. Direct computer aided programming ensures stable performance of the receiver.Main ...