User Manual

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LTC2 LoRaWAN Temperature Transmitter 31 / 32
For a 3 wire PT100, there are two wire are shortcut, for example, as per above photo Channel 1,
there are two red wire , which are shortcut in PT100, connect them as the photo. The 3
rd
wire
(white wire ) connect to the left pin of Channel -1.
6.3 What is the frequency range of LTC2 LoRa part?
Different LTC2 version supports different frequency range, below is the table for the working
frequency and recommend bands for each model:
Version
LoRa IC
Working Frequency
Best Tune
Frequency
Recommend Bands
433
SX1278
Band2(LF): 410 ~525 Mhz
433Mhz
CN470/EU433
868
SX1276
Band1(HF):862~1020 Mhz
868Mhz
EU868/IN865/RU864
915
SX1276
Band1(HF):862 ~1020 Mhz
915Mhz
AS923/AU915/
KR920/US915
6.4 How to change the LoRa Frequency Bands/Region?
User can follow the introduction for
how to upgrade image. When download the images, choose
the required image file for download.
7. Trouble Shooting
8. Order Info
Part Number:
LTC2-XX-YYY
XX:
Probe Version.

SI: Standard IP68 probe x 1
 LT: Low Temperature probe x 1

HT: High Temperature probe x 1

FS: Food Safety probe x 1

FT: Flat Type probe x 1

NA: No probe
YYY: The default frequency band
 AS923: LoRaWAN AS923 band