Tru Design Display Panel For Position Monitored Ball Valves - 90412Position Monitoring allows remote monitoring of the Ball Valve position. The Position Monitoring circuit can also be used as part of an engine or generator start interlock to ensure these dont start without cooling water available. This display panel will indicate the open or closed status of up to 4 valves. FEATURESMonitoring from an accessible locationIndication of multiple Ball Valve positionsAble to be used as an engine interlock to disable