Alphacool flow indicator G1/4 with rpm signal - Plexi [71221] from WatercoolingUK
Alphacool English - Alphacool ES flow and temperature indicator HighFlow with RPM signal - one sensor, two functions! The lightweight & compact sensor made of acetal can be placed at any position
Barrow New LRC2.0 Version Water Cooling System Dedicated, Water Flow Meter Aurora SLFV1-RGB - AliExpress
Alphacool ES flow and temperature indicator "HighFlow" with RPM-Signal AC-17558