Question edited for clarity. Full 'make model (what it is)'.
Did you put batteries in both units and in the right order, sensor first?
Step 1: Insert 2 fresh AA, batteries into the TX29U-IT sensor according to the polarity marked in the battery compartment.
Step 2: Insert 2 fresh AAA, Alkaline batteries into the wireless thermometer according to the polarity markings. Step 3: After 5 minutes place sensor outside in a shaded location.
https://www.lacrossetechnology.com/products/WS-9160U-IT#support
Retired unit so no further warranty or parts.
You can still get one on Amazon
La Crosse Technology WS-9160U-IT Digital Thermometer ...
Amazon.ca
https://www.amazon.ca > Technology-WS-9160U-Digita...
Digital thermometer with wireless remote and clock; Remote sensor transmits from up to 330 feet; records daily high and low temperatures; Receives weather ...
Rating: 4.4 · 7,970 reviews · $31.50 · In stock
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