The TS3B Outdoor Temperature Sensor can be added to an RT3K Remote Control installation and is used to delay fan operation if the outdoor temperature is too warm to provide cooling. 
 
The TS3B wires to the RM3 receiving  module at the fan using 2 conductor, 18 awg thermostat cable. 
Compatible with RT3K Remote Control.
Delays fan operation if outdoor temperature is too warm to provide cooling.