20 Most Recent Acu-Rite AcuRite IndoorOutdoor Wireless Thermometer with Two Receivers Questions & Answers

I am skeptical of the "radio Interference" answer. The symbol on the lower left-hand of the panel indicates that it has received a signal from the sensor. My Receiver stops beeping if I stand between sensor (00739) and receiver (00734?). Perhaps they are too close. It took nearly a week for the sensor to indicate or transmit after Irinsed the battery compartment.

This is a link to your manual: AcuRite 75321A1 Instruction Manual Dave

Double check the batteries to make sure they are installed correctly. If one of the batteries in the outdoor sending unit is in backwards, it will not send the outdoor data. On the indoor unit, there is typically one battery that is used for receiving the signal from the outdoor unit. If all of the batteries are in correctly but that one, you will see the display and the indoor temperature information, but the outdoor information will not be displayed.

Sometimes the RF frequency from the outside transmitter loses contact with the clock's frequency ( it has happened to me only twice in 6 years ), and then the outside temp will not show. Simple solution to fix this is: Take down the outside transmitter and the internally mounted clock. Remove batteries from both. Wait about 10 mts. First install batteries in the transmitter, then after about 30 seconds, install batteries in the clock. In about 5 mts, you will find the clock showing the external temp like before.

sending unit is too close , it needs to be at least four feet away from unit