What type of vent control?

LST - Limit Switch with Transformer

Choose this control if you have a computerized control and you want external limit switches.

• Opens proportionally with a computerized control.
• Primarily used with EnviroSTEP, VersiSTEP and microSTEP/SA computer controls. It can be used with any computer control for proportional vent movement.
• This is a master control. If placed in the center it can have six 2R units, 3 on each side.
• External limit switches