My acu rite weather station will not sync any more
Alison here are a couple of things to try. Does the sensor have good batteries properly installed? They should last over a year. The ABC switch in the sensor could have gotten dirty / corroded, move it back and forth several times to clean the contacts a couple drops of WD40 will help) also remember what letter you leave it on. Then move the ABC switch in your display and set on same as sensor to see if it searches and finds your sensor. Its also possible that either of your two units has failed but try these first.