EB-21A Fail-Safe Electric Bolt with Auto-Relock | D&D Taiwan
D&D EB-21A fail-safe electric bolt with intelligent auto-relock, door/lock monitoring, 0-5s delay. UL/CE certified. Suitable for swing & sliding doors.
Electric Bolt
EB-21A
Function:
*Fail-safe working type.*Built-in door open or door close state detection output point (N.C, N.O and COM)
*Built-in Lock/Latch state detection output point (N.C, N.O and COM)
*Provdes a opening delay for 0, 2.5 and 5 seconds.
*Suitable for in-swing/out-swing/ double swing doors, and sliding doors.
*Long face plate is available by request.
*An optional round face plate can be selected. Only available for EB-21A-12-LDR and EB-21A-24-LDR.
*Intelligent Auto-Relock: Ensures the door is automatically secured and locked after closing.
Model Table:
| EB-21A-12-LD | EB-21A-12-LDR | EB-21A-24-LD | EB-21A-24-LDR | |
|---|---|---|---|---|
| Power Supply | 12VDC | 12VDC | 24VDC | 24VDC |
| Start Current | 900mA | 900mA | 500mA | 500mA |
| Holding Current | 200mA | 200mA | 100mA | 100mA |
| Door Monitoring | N.C & N.O & COM | N.C & N.O & COM | N.C & N.O & COM | N.C & N.O & COM |
| Lock Monitoring | N.C & N.O & COM | N.C & N.O & COM | N.C & N.O & COM | N.C & N.O & COM |
| Open Delay | 0, 2.5, 5 seconds | 0, 2.5, 5 seconds | 0, 2.5, 5 seconds | 0, 2.5, 5 seconds |
Bracket Selection & Armored Door Loop:
For all-glass door
For glass door, w/ framed header
For glass door, w/ framed header
For surface mount installation
Features
- BOLT-LOCK Series.
- Could be mounted in the framed header, side jamb or door lock stile with entire lock concealed.
- Esthetic acceptability is complete.
- Security is greater and installation in old or new construction is fast, easy and economical.
- The optional brackets for glass mounting or surface mounting are also available for your individual needs.
- With intelligent Auto-Relock, won’t stuck the door and make sure the door can be locked and secure.
- Conforms to CE and UL standards.
- 100% Made in Taiwan (MIT)with reliable quality.
- 1,000,000 cycle tested.
- 1-YEAR warranty.
Specification
- Power supply: 12VDC / 24VDC
- Start current: 900mA / 500mA
- Holding current: 200mA / 100mA
- Door position sensor: N.C and N.O output
- Lock position sensor: N.C and N.O output
- Dimensions: Body: 200mm(L) x 34mm(W) x 43mm(D)
- E-catalogue Download
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Electric Bolt
The electric bolt is an access control device used for doors. Electric bolts are available in fail-secure or fail-safe. We also have bolt that is reversible...
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How Can You Prevent Security Breaches from Doors That Fail to Lock Properly After Closing?
Our EB-21A electric bolt features intelligent Auto-Relock technology with dual monitoring outputs for both door position and lock status, ensuring your access control system receives real-time feedback and automatically secures every entry point. With UL/CE certification and 1,000,000 cycle testing, eliminate security vulnerabilities while integrating seamlessly with your existing systems. Contact us to discuss custom integration solutions for your next project.
Manufactured in Taiwan with 100% MIT quality assurance, the EB-21A incorporates intelligent Auto-Relock technology that ensures doors are automatically secured and locked after closing, preventing security vulnerabilities from improperly latched doors. The BOLT-LOCK Series design allows concealed mounting in framed headers, side jambs, or door lock stiles for complete aesthetic acceptability. With UL and CE certifications, 1,000,000 cycle testing, and comprehensive bracket options including EB-20GTG for all-glass doors, EB-20GTF/GTFW for framed glass doors, and EB-20MW for surface mounting, this electric bolt delivers fast, economical installation for both new construction and retrofit projects. Backed by a 1-year warranty and D&D's precision manufacturing expertise in metal processing and access control hardware, the EB-21A provides reliable, secure locking solutions for demanding commercial environments.