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http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/
Value, Size (bytes)
Battery (mV), 2
Distance (mm), 2
Interrupt, 1
Temperature, 2
Status, 1
import base64
import struct
payload = 'DQYCjAAAAAE='
frame = base64.b64decode(payload)
battery = struct.unpack('>H', frame[0:2])[0]
distance = struct.unpack('>H', frame[2:4])[0]
status = struct.unpack('?', frame[7:8])[0]
print(f"{battery=}, {distance=}, {status=}")
payload = 'DRgAAAAAAAE='