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S4A-35S Wall Mounted Electromagnetic Door Holder

Dual Voltage Support: Flexible 12V+24V operating voltage for universal compatibility with fire alarm and access systems.
Durable Aluminum Alloy Body: High-strength construction ensures long-lasting performance and wear resistance.
Wall-Mounted Installation: Designed for convenient wall mounting to secure doors safely in an open position.
Manual Release Button: Features an integrated top release switch for immediate manual door release when needed.
Compact Footprint: Space-saving 79×91×29 mm design suitable for various architectural doorway setups.
  • Brand:

    S4A
  • Item NO.:

    S4A-35S
  • Specifications

S4A-35S Wall Mounted Electromagnetic Door Holder


The S4A-35S is a heavy-duty wall-mounted electromagnetic door holder engineered for automatic release and holding of fire doors and access control barriers. Built from durable aluminum alloy, it features dual-voltage operation (12V+24V) and a compact 79×91×29 mm footprint, making it an ideal safety solution for commercial and industrial facilities.


Parameter Specification
Model Number S4A-35S
Product Type Electromagnetic Door Holder (Wall Mounted)
Material Aluminum Alloy
Voltage 12V + 24V DC
Dimensions 79 × 91 × 29 mm
Mounting Type Wall Mounted

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