Product Overview
GE Security Sentrol 2204A-L SPDT Overhead Door Magnetic Reed Switch
Condition
New old stock, unused. Markings legible: GE Security 2204A/2204AU on switch underside and SENTROL cast on housing and magnet bracket. Includes switch unit with flexible armored lead, matching magnet bracket, mounting hardware, and installation sheet. Sold each.
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Product Overview
GE Security Sentrol 2204A-L is a miniature surface-mount magnetic contact switch engineered for commercial roll-up and overhead doors. Built with a Form C single pole double throw (SPDT) reed switch inside a low-profile cast aluminum housing, it provides an operating gap distance up to 3.0 inches to prevent false alarms from door rattle and wind vibration. The 18-inch flexible stainless steel armored cable protects wire conductors from mechanical impact, foot traffic, and equipment snags.
Key Features
- Contact configuration: Form C SPDT (Single Pole Double Throw)
- Sensing gap distance: Up to 3.0 in (76 mm)
- Electrical ratings: 30 V AC/DC maximum, 0.25 A maximum current, 3.0 W maximum power
- Housing material: Heavy-duty cast aluminum
- Wiring lead protection: 18-inch flexible stainless steel armored cable with three flying leads
- Lead wire assignment: Black (Common), White (Closed loop / N.O.), Red (Open loop / N.C.)
- Environmental sealing: Polyurethane-potted, hermetically sealed reed switch
- Safety certification: cULus Listed (Category 604S)
Applications
- Securing commercial roll-up doors, overhead garage bays, and warehouse gates subject to track play.
- Upgrading facility intrusion alarm loops that require Form C SPDT normally open or normally closed wiring.
- Monitoring automated shop doors, outdoor equipment enclosures, or custom maker access control projects.
Frequently Asked Questions
What is the difference between model 2204A and model 2202?
Model 2204A features a Form C SPDT contact configuration with three wire leads, allowing connection to normally open or normally closed alarm loops. Model 2202 features a Form A closed-loop configuration with two wire leads.
Can this switch handle misalignment on loose or rattling overhead doors?
Yes. The switch and magnet bracket provide up to a 3-inch operating gap distance, accommodating door play, wind rattle, and track vibration without triggering false alarm events.
Does the 2204A-L interchange with older Sentrol or Interlogix 2204A models?
Yes. The 2204A-L shares the identical miniature cast aluminum housing footprint, 3-inch sensing gap, and Form C SPDT configuration as vintage Sentrol and Interlogix 2204A units.
Cast aluminum and armored cable were made for doors that shake, rattle, and take real abuse on cold mornings. Bolt this contact down, wire your loop, and let the roll-up door do its worst.
