Specifications

150 Module 125: Protege GX System Design | Understanding Physical Design
Voltage Drop Calculation
While it is recommended that voltage drop calculations are made with every system design, the following table
offers a general guide.
0.2mm 0.5mm 0.6mm 0.8mm 1mm 2mm
PIR 150m 225m 300m X X X
Keypad 100m
Reader X X 80m 150m X X
Strike / Drop Bolt X 30m 40m 100m 160m 250m
Mortice / Single Mag X 15m 20m 50m 80m 130m
Double Maglock X X 10m 25m 40m 65m
24AWG 23AWG 22AWG 18AWG 16AWG 14AWG
PIR 500ft 750ft 985ft X X X
Keypad 330ft
Reader X X 260ft 500ft X X
Strike / Drop Bolt X 100ft 130ft 330ft 525ft 820ft
Mortice / Single Mag X 50ft 65ft 165ft 260ft 425ft
Double Maglock X X 30ft 80ft 130ft 210ft
For more reading on calculating Voltage Drop, see http://en.wikipedia.org/wiki/Voltage_drop
PIR Cable Distance
The maximum distance between an expander and any security detection device is 300m or 985ft.
Power consumption should also be considered. The diagram below sets general guidelines for ICT PIRs.
Expander
300m/985ft
150m/500ft
0.6mm/22AWG cable
0.2mm/24AWG cable
PIR
PIR