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Actual product may vary from photos.
The Aprilaire 8052/4278 has been discontinued.
TRY THIS INSTEAD
Please call us for a suitable alternate product.

(800) 865-5931

Mon-Fri 8am-7pm, Sat 9am-3pm CT

Replacement OEM Auto-Trac outdoor sensor and shield. For Aprilaire 600, 700 and 400 models. Also can be used as outdoor remote sensor for the Aprilaire 8570 digital thermostat.

In 2002 Alpine Home Air Products became the first company to sell heating, air conditioning and indoor air-quality products online. We have proudly served hundreds of thousands of customers, helping them save time and money by buying their products direct.