Interesting. R333 in the OPs original post looks like it has 111 on it.
Looking at the underside of the board in post #15, the lower left pad looks square - maybe indicating pin 1. That and your diagrams above should be enough to get the OP going.
@dachinazrishvili - if you go with the above info, then you should be able to wire up the sensor. Note what @Paul_B says - you do not talk to the sensor - there is no Rx & Tx. You will have to detect the pulses yourself and keep track of them.