GT-BCXB-N.M

The Aiphone GT-BCXB-N.M is the expanded audio bus control unit for GT Series multi-tenant intercom systems, required when configurations exceed standard limits (>5 entrances, >2 guard stations, or >48 tenants total).
It handles additional trunk lines (2 common + 4 sub lines) and provides dual simultaneous talk paths across systems, essential for large apartment complexes with lift controls or extended wiring distances up to 300m per trunk.
Key Specifications
Feature
Specification
Power Source
24V DC via PS-2420UL (max 320mA, standby 45mA) ​
Trunk Capacity
2 common lines + 4 sub lines ​
Wiring Distance
300m (980') max per trunk to furthest station ​
Talk Paths
2 simultaneous (entrance/guard calls) ​
Mounting
DIN rail/wall mount (mounting rail included) ​
Dimensions/Weight
Approx. 330g; middle gray ABS resin ​
Operating Temp
0°C to +40°C ​
Requirement
1 per expanded system + lift controls ​