$TOKEN (Authentication).
Find the meter
Meters have codes, so filter by the one your system knows:Send a reading
p_reading_at, if it was not taken just now. A reading dated
earlier than the latest is kept in the history but does not move the meter back, so sending a backlog
in any order is safe.
Readings that are refused
A meter that counts upwards cannot go down:Read the history
Sensor readings
Find the sensor’s id from/sensors?select=id,code,name&code=eq.<code>, then send each value:

