This ext. was written for iFinder operated  in the app. Digital Keypad.

It workes to be like tank by lefthand side forward and backward, so the righthand side.

But the signals are too much to be afforded by BLE, singal be lost always.

It is the 1st ext. by my hand, mark it here.

By the way, pack of exit. of mblock is a real zip file, though it named mext....