Will not transmit outdoor info. Batteries good- LED lights. Monitor shows indoor temp only.

Have you changed the batteries in the outdoor temperature sensor?

I have experienced the same with numerous different, "quote un quote" atomic clocks! Please don't forget that this sender unit, that goes outside, generates a RF Singal to be received by the clock inside. This unit transmits a signal 433 MHz signal approximately every. 3 minutes, and after so many years the sender unit's RF section(electronics) just goes out or no longer function properly or not at all! The transmitter/sender for this model number, according to "3M" is obsolete and can no longer be furnished, DRATTS !!!!!

There is no way to turn off beeping. From this site: http://www.chaneyinstruments.com/FAQ.aspx
found solution - search for - Q: My wireless weather station periodically beeps, why?
A: .. unit's ability to detect a foreign radio frequency of another wireless unit when that unit transmits a signal. .. any wireless devices transmitting on a radio frequency have the potential to interfere with each other. Limit the amount of wireless devices to lesson the chance of interference. When beeping occurs, one device will need to be deactivated.

There is no way to turn off beeping, d/s designers forgot. I had the same problem, another external temp gauge showed up on the other channel, so my neighbor or someone is using the similar unit. MY SOLUTION: opened back of case and cut black wire to piezo speaker (at base if rear cover opposite side of stand-up prop) that creates beep. Don't use any sound features, ALL good now.

After replacing the transmitter batteries several times, I tried replacing the clock batteries. They must have been getting low. Once I put in new batteries in the clock it worked fine. Good Luck.

Wireless Digital Thermometer GE5805WS4
Instruction Manual

Buttons and Functions
Button Function
Front of unit:
Min/Max...........displays Min or Max temps recorded
CH(Channel)......changes displayed channel
(hold 3 sec to erase)
Clear................clears memory in Min/max display
Back of unit:
C/F....................Toggle between Celsius
or Fahrenheit temperature display
Scroll.................Remote Channel Scrolling ON/OFF

INSTALLING BATTERIES
IMPORTANT:Read the section SETTING UP THE THERMOMETER before installing the batteries for the first time.

1.Remove the rear cover of thermometer. Install 2 new AA batteries. Replace battery cover.
2.Loosen 4 screws on rear battery cover of the Remote Sensor and slide battery cover off.
3.Install 2 new AA batteries .
4.After batteries are installed, the remote sensor will begin transmitting and automatically register to the Thermometer
(within range) after several minutes. However, you can also press the small button in the battery compartment (labeled Tx) to register the Remote Sensor to the Thermometer immediately
5.Replace battery cover and tighten 4 battery screws. Make ure that the battery cover is fully on and tightened to assure a watertight seal.

SETTING UP THE THERMOMETER
The thermometer can monitor up to two different Remote Sensors on two separate channels. Add-on remote sensors can be purchased separately and are compatible with the GE Wireless Thermometer/Clock (model GE5805WS4) as well as this unit. When first installing, always insert batteries into the Thermometer first, then into the Remote Sensor.
The thermometer uses random security code technology-it will learn the random code of the first Remote Sensor it detects and log in as channel 1. Channel 2 will register in the same way. NOTE: Registered channels will be erased when the batteries of the Thermometer or Remote Sensor are removed. When replacing batteries for a Remote Sensor, remember to clear the corresponding channel of the Thermometer in this way:

1.Remove batteries from the remote sensor (step 2 of installing batterie)
2.Select the channel that you would like to clear by pressing the CH button on the Thermometer until this channel number is displayed.
3.Hold the CH button for 3 seconds to clear the channel
4.Follow steps 3-5

MOUNTING THE REMOTE SENSOR AND THERMOMETER
Remote Sensor is suitable for outdoor mounting (watertight) at a range up to 100 feet from the Thermometer. HOWEVER, HE UNIT SHOULD NOT BE MOUNTED IN A POSITiON WHERE IT WILL BE SUBMERSED IN WATER, OR EXPOSED TO DIRECT SUNLIGHT, OR NEAR OTHER SOURCES OF HEAT OR COLD (I won't bother typing the rest) except for:

LOW Battery icon for the sensor will show up on either the
ch 1 or ch 2 display depending on which sensor is losing battery power.

Battery life 6 months
Temp Range Therm 32 to 122 deg F
Remote Sensor -58 to 158 deg F *
*Alkaline batteries can freeze temporarily at temps below -4 deg F. In this condition, the Remote Sensor cannot accurately transmit temp info to the Thermometer. This limits the effective minimum temp fo the Remote Sensor to -4 deg F

Operational Range....>50ft(and up to 100ft)(less interferances)

RF Channel ....refresh to "---" if no signal received in 60 minutes