Designed with an 8 cubic inch desiccant volume

the switch initiates a safety lockout

it ensures exact fitment and electrical alignment with original system specifications

Port A must always be the inlet to ensure proper performance of the equal percentage curve

Its robust construction resists degradation from repeated cycling

Siemens Building Technology 540-143 Cable 320735-701 Designed with an 8 cubicThe Siemens Building Technology 540 143 Cable is a specialized MMI (Man Machine Interface) communication link designed for seamless diagnostics and configuration within the APOGEE Building Automation System. This 12 foot RS 232 serial adapter features a standard DB9 9 pin female connector on one end and a modular RJ 11 connector on the other, providing the critical physical interface between a technicians workstation or laptop and Siemens Room TEC