i had the same issue; with a little bit of experimenting I was able to set the time. Hold down the stop/time button until it displays 12A (it might display 24H first - do it again if you don't want military time to get the 12A) Let go then press stop/time again so the time blinks. Use the hour and minute buttons to set the time appropriately. When satisfied, press the stop/time button again.
Outdoor temp not working on either channel. -- is showing in the display. Acu-Rite 00590A1 Wireless...
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Outdoor temp not working on either channel. -- is showing in the display. Acu-Rite 00590A1 Wireless Weather Thermometer