The Alpha 3047 OR001 is an electronic temperature sensor produced by Alpha Technologies. It is designed for outdoor use, typically in outdoor power enclosures, and is used to measure ambient air temperature in extreme and hazardous environments. The sensor features an onboard microprocessor, high accuracy, fast response time, and IP67 rated oil-proof construction. Additionally, it features a four pin M12 connector, wide operating temperature range, reverse polarity protection, and short circuit protection.