Radionics‘ D1256 and D1257 system annunciators are four-wire serial devices designed to work with its D9124 Addressable 24 VDC Fire Command Center as well as D9412, D7212, and D7412 Control/Communicators. They feature highly visible blue vacuum fluorescent displays which display alarms or troubles of system alarms/troubles easily – they’re easy to install, test, and maintain using all procedures outlined by Installation Guides, NFPA 72, Local Codes or authorities having Jurisdiction.
Installation
The D1256 and D1257 system annunciators connect to fire control/communicator and fire detectors via four-wire cable (with shielded wiring being recommended if excessive EMI levels exist), with field wiring terminating on a four-pin connector on each unit’s rear side. Follow installation instructions, NFPA 72, local codes and Authority Having Jurisdiction when installing and testing these devices. The D9127U annunciator is polarity sensitive; ensure all POPIT loop wiring that connects to it are landed correctly to avoid point trouble; often disconnecting and reconnecting loop wiring momentarily will work to clear it. Smoke detectors require Detector Reset on either their panel or keypad by entering code>+Enter+Command+47 in order to reset them successfully.
