Here you can find all documents of Sensirion's Liquid Flow Sensors for download
Not Recommended for New Designs (NRND)
SHTW1 is replaced by SHTW2.
SHTW2 is pin-to-pin and protocol compatible to SHTW1 and has identical outer dimensions as well as functionality.
SHTW1 is only available to existing customers for support of their running production.