User Manual

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LHT65 Temperature & Humidity sensor 18 / 40
AT+CLRDTA: Clear the storage, record position back to 1
st
.
AT+RTP: Set record time period, default value 5 minute (AT+RTP=5). If RTP is set to 0, LHT65 will
disable the record feature ( RTP can be set by downlink command)
AT+DATE=19 05 30 16 21 58 set current time to 2019-5-30 16:21:58，AT+DATE=? to check the
current time. System time error is ±2 min per month. This time can be configure via downlink
command.
2.8 Frequency Plans
The LHT65 uses OTAA mode and below frequency plans by default. If user want to use it with
different frequency plan, please refer the AT command sets.
2.8.1 EU863-870 (EU868)
Uplink:
868.1 - SF7BW125 to SF12BW125
868.3 - SF7BW125 to SF12BW125 and SF7BW250
868.5 - SF7BW125 to SF12BW125
867.1 - SF7BW125 to SF12BW125
867.3 - SF7BW125 to SF12BW125
867.5 - SF7BW125 to SF12BW125
867.7 - SF7BW125 to SF12BW125
867.9 - SF7BW125 to SF12BW125
868.8 - FSK
Downlink:
Uplink channels 1-9 (RX1)
869.525 - SF9BW125 (RX2 downlink only)
2.8.2 US902-928(US915)
Used in USA, Canada and South America. Default use CHE=2
Uplink:
903.9 - SF7BW125 to SF10BW125
904.1 - SF7BW125 to SF10BW125
904.3 - SF7BW125 to SF10BW125
904.5 - SF7BW125 to SF10BW125
904.7 - SF7BW125 to SF10BW125
904.9 - SF7BW125 to SF10BW125
905.1 - SF7BW125 to SF10BW125
905.3 - SF7BW125 to SF10BW125