The A99xY Series Temperature Sensors offer an economical solution for a wide variety of temperature sensing needs in the cooling, heating, ventilation, air conditioning, and refrigeration application field. The A99xY Series Temperature Sensors include various models, such as: • bulb sensors • bulb well sensors • room sensors • outdoor sensors • duct sensors • rod sensors • strap-mount sensors The A99xY Series Temperature Sensors are passive Positive Temperature Coefficient (PTC) sensors. Each sensor is calibrated to a published temperature-resistance-characteristic curve, which results in a high degree of accuracy over a wide temperature range. Figure 1: A99xY Series Temperature Sensors Table 1: Features