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LHT65 Temperature & Humidity sensor 10 / 40
2.4.1 Decoder in TTN
function Decoder(bytes, port) {
// Decode an uplink message from a buffer
// (array) of bytes to an object of fields.
var value=(bytes[0]<<8 | bytes[1]) & 0x3FFF;
var batV=value/1000;//Battery,units:V
value=bytes[2]<<8 | bytes[3];
if(bytes[2] & 0x80)
{value |= 0xFFFF0000;}
var temp_SHT=(value/100).toFixed(2);//SHT20,temperature,units:℃
value=bytes[4]<<8 | bytes[5];
var hum_SHT=(value/10).toFixed(1);//SHT20,Humidity,units:%
value=bytes[7]<<8 | bytes[8];
if(bytes[7] & 0x80)
{value |= 0xFFFF0000;}
var temp_ds=(value/100).toFixed(2);//DS18B20,temperature,units:℃
return {
BatV:batV,
TempC_DS:temp_ds,
TempC_SHT:temp_SHT,
Hum_SHT:hum_SHT
};