Emergency Button Switch Key Automatic Reset Wired Manual Button Fire Alarm With NO NC COM OEM Manufacturer
S4A PB-28B exit button, Fireproof ABS / Glass construction, 3A@36VDC Max contact rating, and NO/NC/COM output contacts.
The S4A PB-28B is an emergency door release button (break glass/press type) finished in safety green, essential for life-safety fire exits.
Product Overview
The S4A PB-28B is a professional-grade door release switch designed for secure access control systems. Constructed from high-quality Fireproof ABS / Glass, it is tested to withstand up to 500,000 tests operations. It integrates standard NO/NC/COM contacts with a contact rating of 3A@36VDC Max, offering wide compatibility with electronic door locks and access controllers.
Why Buy This Product
Premium Build
Made from high-quality durable materials for longevity.
Wide Compatibility
Perfect for magnetic locks, electric strikes, and controller systems.
Best for These Applications
Commercial Entryways
Best suited for offices, residential complexes, and secure buildings.
Key Advantages
- Tested Durability: Engineered for up to 500,000 duty cycles to ensure continuous operation.
Frequently Asked Questions
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Weight | 0.15 |
| Shipping Weight | 0.2 |
| Button Type | emergency-release |
| Material | Fireproof ABS / Glass |
| Dimensions | 85×85×27.3mm |
| Contact Rating | 3A@36VDC Max |
| Output Contact | NO/NC/COM |
| Mechanical Life | 500,000 tests |
| Suitable For | Access Control Systems / Hollow Doors |
| Weight | 0.15kg |
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