Remote temperature sensor fails after 2 days

SOURCE: The outdoor temperature & hygrometer

Hi Walter,

I found this in the manual, simply pressing the RESET button won't start communication again. Try this:

Your main unit displays current, minimum, and
maximum temperature and humidity readings
collected by the remote sensor and main unit.
Outdoor data is collected and displayed every
40 seconds and indoor data is collected and
displayed every 10 seconds.

The red LED flashes whenever the sensor
transmits an RF signal to the receiver.
select sensor or use auto scan

• Press CHANNEL to switch between
sensors 1-3.
• To auto-scan between sensors, press and hold
CHANNEL for 2 seconds. Each sensor's data
will be displayed for 3 seconds. To end autoscan,
press CHANNEL or MEMORY.
• Press and hold CHANNEL and MEMORY
simultaneously to search for remote sensors.
resetting the system
The RESET buttons are located on the back of the
main unit and sensor. Use a pointed subject to
press RESET when you change the batteries and
whenever the system malfunctions.

SOURCE: My Nexxtech wireless weather station

You must move the remote sensor close to the base unit to reset it and it will work fine. After it shows the temp then you can move it back to its location. thanks for asking at Fixya.com.

SOURCE: Omnitech Wireless Weather Station model

Push and hold down the channel button, wait for beep, then on the sensor, push and hold the tx button, wait for beep.