The Gatemaster Heavy-Duty Electric Striker, equipped with an integral switch, can be used to confirm that a gate is closed. | Electric Release | Mortice Locks
GM-ES-ERHDMProduct Information
Gatemaster Electric Striker | ERHDM (Electric Release Heavy Duty Morticed)
This heavy-duty electric release, equipped with an integral switch, can confirm whether a gate is closed. The ERHDM(Electric Release Heavy Duty Morticed) can be configured for either fail-safe (unlocking when power fails) or fail-secure (remaining locked during a power failure) operation, depending on your specific application needs.
The electric release is designed for durability, featuring a stainless steel faceplate and a deep locking tongue that provides greater tolerance for the gate. It is installed mortised into the gate frame. We recommend contacting a qualified electrician or an electric gate specialist for installation.
Dimensions (L x W x D)
Lock body (incl. lip): 85 x 35 x 44mm
Short faceplate: 124 x 32 x 3mm
Long faceplate: 165 x 32 x 3mm
Key Features
- Heavy-Duty Construction
Built for outdoor gates - made with a stainless steel faceplate and a deep locking tongue to accommodate larger gate tolerances and ensure durability in varying conditions.
- Integral Gate Monitoring
Includes a built-in switch that can confirm whether the gate is closed and locked, feeding status back to your access control or alarm system.
- Switchable Fail-Safe / Fail-Secure Modes
Fail-Safe: unlocks on power loss.
Fail-Secure: remains locked on power loss.
Easily user-adjustable by repositioning screws on the unit.
- Compatibility with Access Control Systems
Designed to work with a wide range of systems such as electronic keypads, RFID fobs, remote controls, and quick-release devices. Also pairs neatly with Gatemaster’s Superlock Keylatch or other external locks.
- Power and Installation Specs
Operates on 12 V DC, nominal current around 250 mA.
Body size: approximately 85 x 35 x 44 mm, with interchangeable short (124 x 32 mm) or long faceplate (165 x 32 mm) options.
- Weather & Security Resilience
Suitable for long-term external installation - built tough for exposure to weather and gate movement. Made to last when installed by qualified gate or electrical specialists.
Summary Table
| Feature | Description |
|---|---|
| Construction | Robust stainless steel faceplate & deep locking tongue |
| Monitoring | Integral switch confirms gate closed/locked status |
| Power Modes | Switchable between fail-safe and fail-secure |
| Access Control Support | Compatible with keypads, remotes, gate fobs, etc. |
| Electrical Specs | 12 V DC, ~250 mA |
| Physical Dimensions | Lock body: 85x35x44 mm; Faceplates: short/long options |
| Installation Requirements | Morticed into the gate frame by a qualified installer |
Why Choose the ERHDM?
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Versatility: Suits both fail-safe and fail-secure setups.
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Reliability: Built for harsh outdoor environments - corrosion-resistant, tolerant of gate gaps.
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Integration: Works seamlessly with most access control systems, including Gatemaster solutions or third-party systems.
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Security Feedback: The integral monitor reports gate status, enhancing system awareness.
