Serial.setTimeout() sets the maximum milliseconds to wait for serial data. It defaults to 1000 milliseconds.

Serial.setTimeout() inherits from the Stream utility class.

Serial.setTimeout(time)

Serial: serial port object. See the list of available serial ports for each board on the Serial main page.
time: timeout duration in milliseconds. Allowed data types: long.

Nothing

Serial functions that use the timeout value set via Serial.setTimeout():

• Serial.find()

• Serial.findUntil()

• Serial.parseInt()

• Serial.parseFloat()

• Serial.readBytes()

• Serial.readBytesUntil()

• Serial.readString()

• Serial.readStringUntil()