the A1494 is explicitly for remote systems where the temperature selector is located separately from the amplifier

The low side range covers 20 to 100 psi

Key Benefits Direct Sheet Metal Integration: Specifically designed to mount flush against metal surfaces for superior thermal conductivity and accurate surface temperature readings

and Ecobee3 Lite

Carrier 0170307H23 Circuit Board THPU32HP7Y the A1494 is explicitly forThe Carrier 0170307H23 Circuit Board functions as a critical control interface for specific HVAC units, serving as the direct replacement for 0170307X23. As a factory authorized OEM HVAC control board, it maintains the precise voltage regulation and sequencing required by Carrier Corporations engineering standards. This Carrier replacement circuit board is engineered to manage logic cycles for blowers and combustion components, ensuring that timing