Mounting clip allows easy sensor positioning on siding or soffit Includes 60 in. leadwires Factory calibrated; no field calibration required Maximum wire run of 200 feet 2 1/4 in. x 3/8 in. with 60 in. leadwires Outdoor Temperature Sensor senses outdoor temperature for the VisionPRO and VisionPRO IAQ and also can be used for dual fuel balance point temperature operation in heat pump applications.Convenience feature for homeowners.Mounting clip allows easy sensor positioning on siding or soffit.