Omnitech Wireless Weather Station model 16870-US... the sensor unit shows temperature as LL.L... how do I get this unit to display temperature again??? I have replaced batteries, have waited 10-min with batteries out, have poked reset hole. No change.

https://www.lacrossetechnology.com/support/ La Crosse Technology Support There are different sensors for different models. This site should be able to help.

https://www.acurite.com/temperature-and-humidity-sensor-06002rm-592txr.html

Make sure that all the batteries are good!!
This procedure outlines the typical process to pair the sensor and base.
Base Station Battery Installation
·Remove the printed vinyl label from the LCD screen of the base station
·Position the remote sensor near the base station
·Open the battery compartment at the back of the base station and insert (2) AA batteries according to the polarity markings. Replace the battery compartment cover.
·Within a short time the RF signal icon (located to the left of the outdoor temperature channel indicator) will start flashing. This indicates that the base station is ready to pick up the RF outdoor temperature signal from the remote sensor. It will continue to flash for 3 minutes or until the signal from the remote sensor is detected.

Register the Remote Sensor
·Open the battery compartment at the back of the remote sensor and slide the channel selector switch to your desired channel. For the first remote you may select any channel, for additional remotes select any unused channel
·Insert (2) AAA batteries according to the polarity markings. Be sure to install the batteries in the remote within the time that the RF signal icon is flashing on the base station. 1541 WeatherGuide Wireless Weather Forecaster with Barometer

Check the battery in the outdoor unit, resync them per the instructions, if that does not work check for interference.

i have the LL.L error in my sensor, i noticed it was disconnected, i soldered the foot and now it works.

I've had the same problem since I bought this unit 2+ years ago; when the outside temperature moves into the freezing zone, the sensor stops transmitting. I contacted Lacrosse-- all they could suggest was change the batteries. My solution: throw it in the trash!

I have three of these WS-916OU-IT units. After a few years, the outside sensor just fails. You will get dashes and a "TR" low battery signal, even if the batteries are good
just buy another whole weather station (short money) and set both the old and new weather station unit to receive from the single new outdoor sensor.
To do this - just follow the procedure for a single sensor - that is - put the batteries in the new sensor - then within 30 seconds - put the batteries in all the weather stations - they will all pick up the same outdoor sensor.
I now have three units running off of one outdoor sensor.
Seems a bit silly, but it works.

address is http://www.navsupport.net/gps/16878/download/OmnitechGPS_UM_EN_V1.pdf , good luck!!