The solution of the WiSEC company allows to change the interface in the ultrasonic block without sale of the old block and purchase of the new. For this purpose in the block they provided the socket for connection of the interface adapter (position 5).
At the moment there are two types of such adapters - USB and Bluetooth. Cost of the interface adapter makes 10 % from block cost.
Ultrasonic block with USB adapter:
Ultrasonic block with BLUETOOTH adapter: