Temp sensor showing -100.5F

I’ve got a Express Controls EZMultiPli motion detector that has light and temp sensors. It is AC powered. It’s been working just fine for the past year or so. Yesterday I noticed that the temp reading is showing -100F. I’m pretty sure it’s not that cold out LOL.
The light sensor shows the proper reading as does the motion control.
Is there any way to reset/correct this variable, other than removing the device and re-installing?