Play manufacturer video for Mars Air Systems J0021 Air Door Controller Kit with Adjustable 6-Second to 20-Minute Time Delay, Surface-Mount Magnetic Reed Switch, 1/2 HP Max, 115VMars Air Systems J0021 Air Door Controller Kit with Adjustable 6-Second to 20-Minute Time Delay, Surface-Mount Magnetic Reed Switch, 1/2 HP Max, 115V
The Mars Air Systems J0021 is a commercial solid-state controller kit for automatic air curtain control. It is rated for 115 V single-phase service and motors up to 1/2 HP.
The field-adjustable time delay ranges from 6 seconds to 20 minutes and keeps the air curtain on after the door closes. The kit uses a commercial surface-mounted magnetic reed switch with white plastic construction.
- Adjustable time delay from 6 seconds to 20 minutes
- Commercial surface-mounted magnetic reed switch
- 115 V single-phase rating
- 1/2 HP maximum motor rating
Adjustable time delay
The delay is field adjustable from 6 seconds to 20 minutes.
Surface-mounted magnetic reed switch
The commercial switch uses a surface-mounted magnetic reed design.
Solid-state controller
The kit provides solid-state control for automatic air curtain operation.
Commercial switch construction
The magnetic reed switch has white plastic construction.
Switch contacts
The switch has single-pole normally open and normally closed contacts.
Warranty & Protection
1 year parts warranty.
Frequently Asked Questions
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