User Manual

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LHT65 Temperature & Humidity sensor 38 / 40
6. Trouble Shooting
6.1 AT Command input doesn’t work
In the case if user can see the console output but can’t type input to the device. Please check
if you already include the <ENTER> while sending out the command. Some serial tool doesn’t
send <ENTER> after press the send key, user need to add <ENTER> in their string.
6.2 Why the temperature shows 327.67℃?
If the external sensor is 0x01, and there is no DS18B20 connected. The temperature will be
set to 7FFF which is 327.67℃. In this case, please check the connection between the
DS18B20 and the LHT65. User need to push the DS18B20 Audio jack hard to make the
connection firmly. User will feel a click sound if connection is good.
6.3 Device no responses after Interrupt during upload?
Possible the LHT65 are in program mode, try to short the RST pin to GND to make it reset.