Software House iSTAR Edge, Installation & Quick Start Manual, Page: 12 / 26

Installation Requirements
12
Wiring Requirements
Table 6 shows general wiring requirements for an iSTAR Edge and its components.
Table 6: Equipment Wiring Specifications
Signal From To
Belden #
or equiv.
AWG
#
Prs
Shield
Max
Length Max. Wire
Resistance
RS-485 Comm, two
wire iSTAR
Edge RM & I/O
Modules 9841 24 1 Yes 4000 ft.
(1212 m) 103

Power iSTAR
Edge RM & I/O
Modules 8442/8461 22/18 1 No Range of
600 ft. to
1500 ft.
depends
on AWG See Note
b
RJ45-Ethernet iSTAR
Edge
Hub, Host N/A Cat 5 or
more
24
2 N/A 328 ft.
(100 m) 8.4

Supervised Input iSTAR
Edge or I8 Input 8442/8461 22/18 1 No 2000 ft.
(606 m)

Request-to-exit
(REX or RTE) iSTAR
Edge or
RM-4/4E
module Switch 8442/8461 22/18 1 No 2000 ft.
(606 m)

Door contact
(DSM) iSTAR
Edge or
RM-4/4E
module Contact 8442/8461 22/18 1 No 2000 ft.
(606 m)

Supervised Input (UL)
Note
a
iSTAR
Edge or I8 Input 9462 22 1 Yes 2000 ft.
(606 m)

Relay Control RM-4
module ARM-1 9462 22 1 Yes 25 ft.
(7.6 m) .04

Reader Data iSTAR
Edge or
RM-4/4E
module Proximity/
Wiegand
signaling
read head 9942
9260
Alpha wire
5386C
22
20
18
3 Yes 200 ft.
(60.96 m)
300 ft.
(91.4 m)
500 ft.
(152.4 m)
3.2

3.2

3.2

a. To comply with UL requirements, use shielded, minimum 22 AWG stranded, twisted pair cable for monitor points, DSMs, and
REXs. Use Belden 9462 or equivalent.
b. Calculations are based on a single RM-4 reader with keypad and LCD (250 mA):
Using 22 AWG, distance = 600 ft. (.0165

ft.)
Using 18 AWG, distance = 1500 ft. (.0065

ft.)
NOTE
UL Listed Panic hardware shall be used to allow emergency exit from a protected area.