What type of vent control?

ILS / LST - Internal Limit Switch Limit Switch with Transformer

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

• Opens proportionally when used with a computerized control.
• Primarily used with EnviroSTEP, VersiSTEP and microSTEP/SA computer controls. It can be used with any computer control for proportional movement
• If used with a STEP 50, STEP 500 or MiniSTEP vent moves from full closed to full open with no increments
• This is a master control, if placed in the center it can have six ILS/2R units, 3 on each side.