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The temperature working range can reach: -40°F to +257°F (-40°C to +125°C). Perfectly suitable for monitoring refrigerator/freezer. ❗ ST4 is in iteration, so this link may have ST4 or ST5 Sensor. The ST4 Wireless Sensor is not compatible with the hub of the ST6 Temp Sensor Kit, so the ST4 Sensor cannot be added to the ST6 Kit.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.