Add note about "scan_interval" to configure polling (#33936)

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
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Matthias Beyer 2024-07-29 08:56:06 +02:00 committed by GitHub
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## API information
Alpha Vantage offers two tiers of the API key, one free and one paid for. If you are using the free version, you will be limited to twenty-five queries per day. The sensor polls every 5 minutes, so you will only get data for the first two hours per day.
Alpha Vantage offers two tiers of the API key, one free and one paid for. If you are using the free version, you will be limited to twenty-five queries per day. The sensor polls every 5 minutes, so you will only get data for the first two hours per day. This can be configured using the `scan_interval` variable.
The paid version starts at 75 queries per minute, increasing ticker quantity quite a bit.