The Linea Pro 5 uses the battery indicator button and the scan button to perform a soft-reset without removing the iOS device. The soft-reset feature simply cycles the power allowing the Linea pro 5 to restart.
To perform the reset function, press the scan button & status button simultaneously until a series of beeps is sounded. Release both buttons and allow the Linea Pro 5 to restart. Repeat this process if the Linea Pro 5 does not restart.