The Honeywell C7089R1013 is the correct accessory replacement for the following:
The Honeywell Wireless Outdoor Sensor can be mounted on a vertical wall with the supplied bracket and mounting hardware. This wireless outdoor sensor can be used with RedLINK thermostats, accessories and is also known as part number C7089R1013. This sensor does not interfere with other wireless devices in your home. Installation is quick, easy and the package includes two AA Lithium batteries and mounting hardware.
Honeywell Wireless Outdoor Sensor specifications:
The operating temperature range is from -40 degrees Fahrenheit to 140 degrees Fahrenheit (-40 degrees Celsius to 60 degrees Celsius). The operating humidity range is (%RH) 0 to 100% RH condensing. This unit also features a 2-year battery life and 2 month low battery warning indicator.