D7024 Reference Guide
Copyright © 1997 Radionics, Inc.
Page 5
1.0 Overview (continued)
1.2.6 Keypads
• Maximum # of keypads:
4 D7033 keypads
• Maximum wire length each:
1000 feet
• Maximum wire length total:
4000 feet in system
• Wire type:
4 conductor, unshielded, #22 AWG (0.8 mm)
“Telephone quad” or #18 AWG (1.0 mm) quad
wiring can be home-run or daisy-chained.
Note: No more than 2 keypads recommended on
any 1000 foot run.
Note: Shared cable is not recommended for
keypad, multiplex, options bus, telephone, or
siren wiring.
1.2.7 Communicator
Will report to two (2) phone numbers with full single,
double, and back-up reporting. Communicates in SIA,
Contact ID, BFSK, and 4/2 Tone burst formats.
1.2.8 Users
The system allows up to 16 individual users. Each
user can have his own PIN number (the 4 digit code
entered at the keypads) and his own authority level
(to determine which functions he may perform).
1.2.9 Lightning Protection
MOVs and spark gaps provide protection from
lightning surges and static discharges.
1.2.10 Backup Battery Calculation
• The following table is used to calculate the standby battery capacity required by NFPA when using the D7024:
1.2.11 Standby Current Load
• Battery AH - (20% S 0.375 AH's Alarm)
• The following table is the derated battery divided by hours minus the control standby (175 mA):
