... limit and machinery limit design,accurate position,avoid gear with switch.3. Multi-angle assembling,easy to install.4 ... energy meters2.Air-warm valve.HVAC and fire works.3.Water equipment,auto-control watersystem,industrial mini-auto ... valve,motorized valve,industrial valve,manual valve,pneumaticvalve/air actuator,automatic valve,actuator,IC card water meter,RF card water meter,wireless remote control ...