VMA306 Vs HC-SR04

VMA306.
Is there any module diagram? We had to change this module because we where using HC-SR04 and with VMA306 we are reading wrong values… when we change to HC-SR04 it works OK… We whould like to know why and if possible change our circuit, library or software…

We already have specs… we would like datasheet or a schematic… for exemple pin OUT what is it for?
Thanks

Dear jmendinhos,
Pin “out” is a bit misleading, it’s in fact a “mode” pin and should be left open or connected to GND.
A schematic will be available from our website soon (tomorrow)
best regards,