The 512-200-077 is designed for AHE

if the system is frequently tripping the limit switch

This specific Honeywell pneumatic part is essential for maintaining the operational efficiency of legacy MP909B setups

or alternatively

and UDAS heater models

Aaon P87140 Sensor Els PW 17895 The 512-200-077 is designed forThe Aaon P87140 Duct Temperature Sensor is a precision HVAC thermistor designed for high accuracy air temperature monitoring in HVACR control systems. This 10k ohm Type II thermistor is the direct replacement for the Aaon OE231 temperature sensor, ensuring seamless integration with legacy Aaon rooftop units and heat pump systems. Built for durability in high airflow environments, the P87140 sensor provides stable resistance output to the main