Apartment, Multifamily & Rental Property Access Control
Apartment building access control hardware: anti-clone readers with matched fob sets, QR visitor codes, 4G controllers for rentals and UHF tags for gates.
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EB-110 Fail-Safe Electric Drop Bolt Lock, 12V, with Time Delay
Fail-safe 12 V DC electric drop bolt with a selectable 0/3/6/9 s time delay and 110 mA draw, for wood, metal, glass and fire doors. Fail-secure build on request.
- Fail-safe as standard: the bolt retracts when power is cut; fail-secure build on custom order
- 12 V DC ±10% supply with 110 mA operating current
- Selectable 0/3/6/9 s time delay before the bolt relocks
- Microprocessor control, photoelectric bolt control and built-in MOV reverse-current protection
- Low-temperature, low-power design; passed a 500,000-cycle power-on aging test
- Security mode
- Fail-safe (fail-secure on request)
- Supply
- 12 V DC ±10%
- Operating current
- 110 mA
- Time delay
- 0 / 3 / 6 / 9 s
- Status output
- None
- Lock body
- 200 × 28 × 39 mm
Reply within 24 hours Tested before dispatch Worldwide shipping
Fail-Safe Electric Drop Bolt Lock, 12V, with Time Delay: overview
EB-110 is a 12 V DC electric drop bolt for access-controlled doors that should open when power is removed. The standard build is fail-safe: once the supply is cut, the stainless-steel bolt retracts, so a power failure or a fire-alarm interlock leaves the door free. Where a door must stay locked without power, we can supply a fail-secure build as a custom order.
Inside the aluminum-alloy body, a microprocessor circuit drives the bolt, and photoelectric control is used to prevent mechanical faults. The design targets low power draw and cold conditions: operating current is 110 mA at 12 V DC ±10%, and the lock has passed a 500,000-cycle power-on aging test. Reverse-current protection with an MOV is built into the circuit. It fits wooden, metal, glass and fire doors, including double-swing and sliding doors.
Integration notes
Pick a 0, 3, 6 or 9 s time delay to hold the bolt clear while the user passes before it relocks. For fail-safe operation, feed the 12 V DC lock supply through the normally closed (NC) contact of the controller's lock relay. This model has no status output; choose EB-120 when the controller needs door-status feedback. The 200 × 28 × 39 mm body mounts in the frame behind its long faceplate, and the 90 × 25 × 2 mm strike plate goes into the door leaf. On frameless glass, add the EB-130 U bracket or the EB-140 glass bracket.
More features
- Aluminum-alloy body and stainless-steel bolt for wood, metal, glass and fire doors
- CE, FCC and RoHS listed; EB-130 and EB-140 glass door brackets available
EB-110 specifications
Locking
| Lock type | Electric drop bolt, mortise mount with long faceplate |
|---|---|
| Security mode | Fail-safe (power off = bolt released); fail-secure (power off = locked) available as a custom build |
| Time delay | 0 / 3 / 6 / 9 s, selectable |
| Signal output | None |
| Control | Microprocessor control circuit with photoelectric bolt control |
Electrical
| Operating voltage | 12 V DC ±10% |
|---|---|
| Operating current | 110 mA |
| Circuit protection | Built-in reverse-current protection (MOV) |
Mechanical & environment
| Lock body (L × W × T) | 200 × 28 × 39 mm |
|---|---|
| Strike plate (L × W × T) | 90 × 25 × 2 mm |
| Materials | High-strength aluminum-alloy body, stainless-steel bolt |
| Suitable doors | Wooden, glass, metal and fire doors; double-swing and sliding doors |
| Endurance | 500,000-cycle power-on aging test |
| Temperature | Low-temperature design; rated range not published (test data on request) |
Compliance & accessories
| Certifications | CE, FCC, RoHS |
|---|---|
| Optional brackets | EB-130 U bracket, EB-140 glass door bracket (sold separately) |
EB-110 vs EB-120 electric drop bolts
| Feature | EB-110 | EB-120 |
|---|---|---|
| Security mode | Fail-safe (fail-secure build on request) | Fail-safe |
| Status output | None | Door-status signal |
| Time delay | 0 / 3 / 6 / 9 s | 0 / 3 / 6 / 9 s |
| Lock body (L × W × T) | 200 × 28 × 39 mm | 205 × 42 × 35 mm |
| Certifications listed | CE, FCC, RoHS | CE, FCC, RoHS |
| Glass door brackets | EB-130, EB-140 | EB-130, EB-140 |
Both locks run on 12 V DC ±10% at 110 mA and use a 90 × 25 × 2 mm strike plate.
Specifications can change between production batches. Confirm the current revision with us before placing volume orders.
Ordering options
Quote the SKU that matches your frequency, interface and mounting. Not sure? Send us your controller model and we will pick the variant for you.
| SKU | Configuration | Actions |
|---|---|---|
| EB-110 | Fail-safe electric drop bolt, 12 V DC, 0/3/6/9 s delay, no status output, with strike plate. Fail-secure build quoted on request. |
Where the EB-110 is used
- Glass lobby doors in offices and apartment buildings, fitted with an EB-130 U bracket
- Escape-route doors that must release on power loss or a fire-alarm cut-off
- Double-swing corridor doors controlled by a card reader or keypad
- Swing or sliding doors at unheated entrances where a low-temperature bolt is preferred
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EB-110 FAQ
Is EB-110 fail-safe or fail-secure?
Standard units are fail-safe: removing the 12 V DC supply retracts the bolt. A fail-secure version that stays locked without power can be built as a custom order.
What power does the lock need?
It runs on 12 V DC ±10% and draws 110 mA in operation. Size your 12 V supply for the total load on the circuit plus 25–50% headroom.
What does the 0/3/6/9 s delay setting do?
It sets how long the bolt stays retracted after release before it relocks, giving users time to pass through. Choose 0 s for immediate relocking.
Can I install it on a frameless glass door?
Yes, with a bracket sold separately. The EB-130 U bracket and the EB-140 glass bracket are both stainless steel and clamp glass 8–15 mm thick.
What temperature range is the lock rated for?
It is a low-temperature design, but no rated operating range is published for this model. Contact us for test data before specifying it for unheated or exterior-facing doors.
Before you buy
Related buyer guides
Magnetic Lock Wiring Diagrams: Maglock, Exit Button, Power Supply and Reader
Maglock wiring with dry-relay COM/NC: keypad and reader diagrams, REX signals, approved egress release paths and manufacturer-specific suppression.
Fail-Safe vs Fail-Secure Locks: How to Choose for Each Door
A fail-safe lock releases when power is cut; a fail-secure lock stays locked. Learn which to use per door, how to wire NO/NC, and what egress codes expect.
Standalone Access Control Keypad Programming: Master Code, Users and Reset
Program a standalone access control keypad: enter programming mode, change the master code, add card and PIN users, set relay time, reset and wire it.
Related products
EB-120
Electric Drop Bolt Lock with Door-Status Output, 12V
Fail-safe 12 V DC drop bolt with a door-status signal output for monitored doors, 0/3/6/9 s delay and 110 mA draw. Fits wood, metal, glass and fire doors.
Fail-safe (power off = released)Door-status signal12 V DC ±10%
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EB-130
Drop Bolt Lock U Bracket for Frameless Glass Doors
Stainless-steel U bracket that mounts an electric drop bolt on frameless glass doors 8–15 mm thick with a 180° opening range. Listed for EB-110 and EB-120.
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EB-140
Glass Door Bracket for Drop Bolt Locks, Bottom-Frameless
Compact 90 mm stainless-steel bracket for electric drop bolts on glass doors that are frameless at the bottom. Clamps 8–15 mm glass; iron shim and two rubber gaskets included.
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EL-180
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Get pricing for the EB-110
Send your card type, interface and quantity. You get a quote, lead time and compatibility notes within 24 hours — samples available for most items.