Hello Marek,
Unfortunately, in our devices lower than 30 sec "Ble scan start period" cannot be set. Also, BTSMP1 device broadcasts the state of a magnet (1 or 0), however, the magnet event counter is not included in the BTSMP1 which would count how many times the magnet was attached to the sensor. In the future, such feature will be implemented.
Best regards,