ROFU 8512 Standard Single Magnet Selectable Keyhole Mount, 1200 LB Holding Force, 12/24VDC

No, and that's by design. The 8512 is a fail-safe magnetic lock, so cutting power releases the door. It's wired to release on fire alarm activation, which is how a maglock has to behave on an egress door. If you need a door that stays secured when power drops, a magnetic lock is the wrong device type entirely, go to a mechanical lock or an electric strike in a fail-secure function.

1200 lb of holding force from a single magnet, which is the common rating for interior commercial swinging doors, perimeter access-controlled openings, and stairwell doors in offices, schools, and multi-family buildings. It's a commercial-duty device, not a residential one. For a pair of doors you'd need a second magnet or a double unit such as the DynaLock 2250, which is a double 1200 lb surface mount.

The magnet body measures 10-1/2 x 1-9/16 x 2-11/16 inches and the armature plate measures 7-1/4 x 5/8 x 2-3/8 inches. Lay those against your header and stop before you order, since a surface-mounted maglock needs a flat, uninterrupted run of frame the full length of the magnet plus room for the armature on the door leaf.

The ROFU 8512 is a commercial magnet in an anodized extruded aluminum housing, described as a standard single magnet without a weather rating. For openings exposed to weather, the Locknetics WMG Series is a weatherproof electromagnetic lock in 600 lb and 1200 lb models on 12/24 VDC, the Alarm Controls 1200WP Series is weather resistant, and the Dortronics 1000 Series industrial mag lock has sealed electronics, is weather resistant, and runs 12/24 VDC dual voltage field selectable like the 8512.

The ROFU 8512 is a standard single magnet with built-in MOV spike and surge protection and no residual magnetism, and it may be released upon activation of a fire alarm. It is not a monitored or delayed egress magnet. For delayed egress on a single door, the Alarm Controls 1200DE Series is a delayed egress magnetic lock. For monitoring, the Dorma EML310 with bond alert and door position sensor reports both bond and door position, the Dortronics 1000 Series carries an SPDT door position switch, the DynaLock 2101 Series is a 1200 lb early warning lock, and the Locknetics MG Series is offered in standard and monitored versions.

The ROFU 8512 is a standard single magnet, so it covers one leaf. For a pair, the DynaLock 2250 Series is a double electromagnetic lock rated 1200 lb, surface mounted for outswing or inswing single or double doors, and the Alarm Controls 1200D Series is a double magnetic lock. The Dorma EML320 is a double door electromagnetic lock rated 1500 lb, carries a fire rating, and is electrically locked (fail safe), the same release behavior as the 8512's fail-safe function.

No cutting into the frame body. The 8512 uses keyhole mounting, so the mounting screws go in first and the magnet housing slides left to right onto them, which lets one person hang the magnet and then dress the wiring. It's a surface-mounted device, so the magnet lands on the frame header and the armature on the door leaf.

Two things handle that. The 8512 has built-in MOV spike and surge protection, so the inductive kickback when the magnet de-energizes is clamped at the lock instead of coming back down the wire to your controller or reader. It also has no residual magnetism, so the armature lets go cleanly instead of holding the door for a beat after release. That second point matters on egress doors where a lingering pull reads as a failed release.

All three are single-door surface magnets in the same class, and the DynaLock 2011 is also rated 1200 lb. What separates the 8512 is the keyhole mounting, which lets the magnet slide onto pre-set screws, plus 12/24 VDC field-selectable voltage so you aren't committed to a supply voltage at order time. The DynaLock 2011 is specified for outswing doors; the DynaLock 2050 covers outswing or inswing on single or double doors. Alarm Controls 1200 is the single-door version of that line, with the 1200D as its double.

The ROFU 8512 magnet body measures 10-1/2 inches by 1-9/16 inches by 2-11/16 inches at 1200 LB holding force. Where a smaller magnet suits the frame, the Schlage M420 is a 500 lb single door electromagnetic lock in the M400 Series, and the Dortronics 1107 is a narrow 2 inch slim line 600 lb single door mag lock in the 1100 Series. The Locknetics MG Series is built in 600 lb and 1200 lb models on 12/24 VDC, so it covers both the lighter rating and the 8512's rating in one family.

The ROFU 8512 is a surface mounted single magnet whose keyhole mounting slides left to right for alignment during installation, with the magnet on the frame and a 7-1/4 inch by 5/8 inch by 2-3/8 inch armature plate on the door. That arrangement suits a swinging leaf. For a sliding door, the Schlage Electronics 320M is a compact mortise sliding door electromagnetic lock rated 1500 lbs and built as heavy duty, so it is a different mounting approach rather than a drop-in alternate to the 8512.

Two finishes: aluminum (US28) and dark bronze (US40). The housing itself is anodized extruded aluminum, so the finish is in the anodizing rather than a coating that chips off the corners over time. Dark bronze is the one to pick if the frames and closers on the opening are already dark bronze or oil-rubbed tone.

The ROFU 8512 is finished in Aluminum (US28) and Dark Bronze (US40) on a heavy duty anodized extruded aluminum housing. Where 628 is the finish being matched, the Dorma EML310 single door 1500 lb magnets and the EML320 double door 1500 lb magnet are supplied in 628; all three are fire rated and electrically locked (fail safe), the same release behavior as the fail-safe 8512.