A-A-52317A
2.3.21 UL compliance. The DCC shall be designed and manufactured to comply with Underwriter's Laboratories, Inc. (UL) Standard 1635, when installed in accordance with UL requirements, except as specified herein. The DCC need not be certified by UL. Unless otherwise specified in the solicitation or purchase order, the DCC need not meet the requirement for sending an alarm or trouble signal when removed from its installed location and the requirement for a tamper switch on the door or cover.
2.3.22 Keypad. The keypad shall be the principle means of programming and control of the DCC. It shall contain, as a minimum, keys numbered 0 through 9 and any other keys necessary to access programmable system variables and to enter data therein during programming and to initiate system functions. The keypad shall incorporate a visual display to facilitate programming and indicate alarms and system events. The keypad shall incorporate an audible sounder that shall sound on alarms and other events if programmed. The keypad shall incorporate all features required to enable programming and operation of the DCC as specified in this CID.
2.3.23 Expansion modules. Expansion modules shall provide hardwire input terminals for two or more device outputs conforming to 2.3.1. The expansion modules shall recognize changes in the device output conditions and shall communicate the changes when polled by the DCC. The expansion modules shall receive operating power from the DCC or from a separate 12 Vdc power source. It is desired that removal of the cover shall cause a normally closed condition across a pair of terminals to go to the open state. All other characteristics required of the modules to operate with the DCC in the manner required to meet the requirement of this CID to monitor up to 64 zones, shall be incorporated therein. Unless otherwise specified in the contract or order (see 6.1), an expansion module shall provide inputs for two device outputs.
2.4 Cellular Alarm Transmission Device
2.4.1 Function. The CATD shall provide a secondary data link over cellular radio when it determines the public switched telephone network data link is inoperative.
2.4.2 Telephone line fault monitoring. The CATD shall monitor the telephone line voltage and, upon detection of changes that indicate a line fault on the telephone link, the CATD shall automatically switch to the cellular link and transmit any messages generated by the DCC over the cellular link to the phone number(s) dialed by the DCC. This switch to cellular transmission shall occur not more than 15 seconds after a line fault is detected. It is desired that, if a transmission is initiated by the DCC before the CATD has switched to cellular, the switch to cellular operation shall occur with no delay. The CATD shall switch back to communication via the telephone link not more than 2 minutes after restoral of the telephone link. The CATD shall also provide a relay output, indicating the line fault condition, not less than 8 seconds nor more than 60 seconds after detection of the line fault.
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business