AWG18

Aiphone AWG 18 (1.0 mm diameter) cables are low-capacitance, non-shielded PE-insulated wires recommended for long-distance runs in GT, LE, IX, JO, and TC-M series intercom systems, supporting up to 980-1600 feet depending on configuration.
Common models include 87180250C (2-conductor, 500') and 87180450C (4-conductor), featuring solid annealed copper conductors, PVC jackets (CL3R riser-rated), and UL/cULus listing for reliable signal integrity.
Key Specifications
Feature
Specification
Gauge
18 AWG solid (Ø1.0 mm) 
Conductors
2/4 (models 871802/871804 series) 
Max Distance
980' (GT Series), 1600' (LE Series) ​
Resistance
~6.2 Ω/1000 ft ​
Capacitance
~13 pF/ft (low cap design) ​
Rating
CL3R riser, RoHS/REACH compliant 
Applications
Intercom bus, power, audio/data ​