Review on 🌡️ Honeywell Ademco 5821 Wireless Temperature Sensor by Fisseha Rodgers

The device seems a bit unstable. An error was reported even though the temperature was not out of range. I removed the battery, checked that the voltage is normal, reassembled it, it works fine. The problem with this device is RF related, they don't have diagnostics to tell you what's going on. It's just blind faith that it works right or not.