Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It can only pick up the signals of two remote temperature sensors

I have three remote outdoor sensors and followed the instructions to add them with the weather station.But I could only get two channels working. The third channel (the number '3' in a square box) never shown up.I know all the sensors were working because I had rotated them as 1st, 2nd, and 3rd sensors.Each time the weather station could read the temperatures from the first two senors only.Has anyone really made all the three channels working? I would change my rating to this product if I could make thethird channel working.