20 Most Recent Oregon Scientific STR938 Solar Transmitter, Anemometer, Replacement for WMR968, WMR918, WMR112, Radio Shack 63-1016 Questions & Answers

Did you press the reset on the solar transmitter after you replaced the batteries? It is left of the NiCAD pack if the AA batteries are on the right. If after pressing reset, and you are using a WMR 938, and still not receiving, press and hold the "channel" button for 5 seconds on your monitor to re-register the signal from the transmitter.

Use a volt meter to see if the battery is depleted or not. If you replace the battery and the alarm stops then it was a weak battery, If it keeps on then there something setting it off. You can use the information in the owners manual Oregon Scientific BAR629HGU Manuals to troubleshoot it.

Heavens Kaitlan you don't ask much do you? I think you need to spend a happy hour or two online with each question, unless there's a Professor of Climatology reading this.