Fermax Lock Release 410AD-412-L22 Max

Fermax 2812 Electric Lock Release 410AD-412-L22 Max (12Vdc Automatic Fail Secure)

The Fermax 2812 is a specialized electric lock release featuring automatic re-locking functionality, designed for Fermax door entry and access systems. Its type code breaks down as: 410 series compact body, AD operation, 412 voltage, L22 shield, and MAX adjustable latch. This model is particularly useful where ensuring the door re-locks after entry is critical, while still being fail-secure.

Key features include: The 410 compact body, suitable for narrow frames like aluminium or PVC. AD signifies Automatic-Fail Secure DC operation. This means the lock is normally secure (locked) without power. Applying 12V DC (412) momentarily unblocks it. Crucially, it remains unblocked *only until the door is physically opened and closed again*. Once the door closes, it mechanically re-locks automatically, regardless of power status. This ensures the door isnt inadvertently left unlocked if someone buzzes entry but doesnt immediately open the door. The L22 indicates the fitted narrow flush shield (22mm x 250mm approx.), and MAX refers to the adjustable jaw for precise latch alignment.

Like other Fermax strikes, it is typically reversible and symmetrical. The automatic re-locking feature provides enhanced security over standard fail-secure types in certain scenarios. It requires the door to physically cycle open and closed to reset to the locked state after activation. This fail-secure automatic operation ensures security is maintained even during power loss, while guaranteeing re-locking after authorised passage.

Features

• Compact Electric Lock Release (410 Series Body)
• Operation: AD - Automatic Fail Secure (Unlocks on 12V DC pulse, re-locks mechanically after door cycles)
• Voltage: 412 - 12V DC
• Shield: L22 Type Flush Shield (22mm x 250mm approx.) - Grey
• Latch: MAX Adjustable Jaw (+/- 4mm adjustment)
• Reversible design (Left/Right DIN)
• Symmetrical body
• Ensures door re-locks after use
• Suitable for narrow profile frames

Technical Specifications

• Manufacturer: Fermax
• Model Reference: 2812 (Type 410AD-412-L22 MAX)
• Operation Mode: Automatic Fail Secure (Normally Locked)
• Input Voltage: 12V DC (pulse activation)
• Current Consumption: Check datasheet (pulse current)
• Body Series: 410 (Compact)
• Shield Type: L22 Flush Plate (Grey, approx 22x250mm)
• Latch: MAX Adjustable
• Holding Force: Refer to Fermax datasheet

Dimensions

• Body Dimensions (410 approx): 52.5mm x 16.4mm (height x width) - depth varies.
• L22 Shield Dimensions (approx): 250mm x 22mm (height x width).