City of Industry, Los Angeles County
Magnetic Lock Installation in City of Industry
Short answer: Magnetic lock installation in City of Industry puts an electromagnet on the door frame header and a steel armature plate on the door. Power holds them together; cut the power and the door is free. We choose the holding force, mount both parts squarely, wire the power supply and release devices, and test that the door opens every way it must.

People are sometimes surprised to learn that a magnetic lock is the opposite of fail-secure. It holds only while powered, so a blackout, a tripped breaker or a fire alarm opens the door. That is a feature for exit safety and a risk for security if nobody plans for it. Our approach to magnetic lock installation in City of Industry treats both sides of that. We make sure the door can always be exited, then add backup power, a separate mechanical lock where the rules allow it, and monitoring that keeps the door as secure as the building permits.
Magnetic Lock Installation in City of Industry: what to expect
Because a maglock has no latch, nobody leaving a building can operate a handle to get out; the lock has to let go for them. That is why magnetic lock installation on exit doors follows a pattern. A sensor above the door detects someone approaching from the exit side and cuts power. A push button near the door, wired to interrupt power directly instead of relying on a software setting, gives a second way out. The fire alarm system, and where required the sprinkler system, also cuts power so the door opens in an emergency, and losing power releases the lock by itself. Those requirements come from the building code California adopts, with local amendments, and the building department or fire marshal decides how they apply to your door. Delayed-egress locks, used in some care and retail settings, follow separate rules. We design to your jurisdiction's expectations and note which parts need review, so you aren't guessing when someone with a clipboard visits.
What we can do on-site
- Double doors and paired magnets. Double doors need two locks or a combined unit, one per leaf, plus a plan for the inactive leaf. We align both plates and magnets so each pulls evenly, then check that the meeting edge keeps the leaves from flexing apart. Both leaves release together when power is cut.
- Exit sensors and push buttons. Exit devices are the part that makes a maglock safe. We choose a sensor that sees only the interior side, place the button where a person can find it in an emergency, and label it clearly. The button's wiring is independent of the controller, so a software failure never traps anyone.
- Fire alarm release and code review. A fire alarm release uses a relay from the panel to cut lock power when the alarm activates. We install the relay on the lock's power line and test it with your fire alarm contractor, who has to trigger the panel. When building rules require sprinkler release too, we plan for that.
- Power supplies, battery backup and surge protection. Nothing ruins a maglock install like a weak supply. If voltage sags, the magnet loses holding force; if the supply overheats, it quits. We mount supplies in ventilated spots, check voltage at the lock under load, and avoid sharing power with devices that could add electrical noise.
- Readers, keypads and controllers. A maglock pairs well with almost any credential: cards, fobs, PIN codes, mobile credentials. What matters is that the controller's relay is rated for the lock and that the exit path never depends on that relay. We match the pieces, then test each credential type.
What's different about City of Industry
Hotels, spas and event venues use maglocks on glass doors to pool areas, fitness rooms and back-of-house corridors where guests and staff share space. The exit has to be obvious to someone who has never been in the building, and doors must release for staff carrying trays or luggage. We install clear signage, sensors that detect approach reliably, and a fire alarm release your alarm contractor can test.
Dealerships use maglocks on key rooms, parts cages and glass doors between showroom and service areas. A key room is the most sensitive, since it holds every key on the lot. We pair the lock with logging, door-position monitoring and a clear exit, and tie it into your key-control routine so a door left ajar draws attention before it becomes a problem.
Inland heat stresses power supplies, batteries and plastic parts. A supply in an unvented ceiling can run hot and fail, and backup batteries age faster. Glass and aluminum doors expand in afternoon sun, which can shift plate alignment slightly through the day. We mount supplies where air moves, check alignment hot as well as cool, and put a battery replacement date on the label.
Common situations
- Say an earlier installer put a maglock on an office door with a card reader and nothing else. There is no exit button, no sensor and no link to the fire alarm. We'd survey the door, explain what is missing, add a sensor, a push button and a release relay, and tell you honestly which parts the building official will care about.
- In a two-story office building, a corridor door leads to a stair enclosure, and someone wants card access on it. Stair doors have specific rules because people must be able to leave the stair in an emergency. We'd talk with the property manager and the fire marshal before touching the door, since the right answer may be a different lock or no change at all.
- A typical call: a small company keeps its network equipment in a closet with a hollow-metal door and a keyed knob that everyone has copied. The manager wants a keypad. We'd mount an inswing bracket kit, run cable above the ceiling, set a short release time, and discuss whether a strike on the existing latch might be a better fit.
- For example, a fitness studio has double glass doors off a shared hallway near Workman and Temple Family Homestead Museum. Members badge in, and the owner wants evening entry without handing out keys. We'd fit a magnet on each leaf, wire both to a card reader and controller, add sensors and a push button inside, and connect a fire alarm relay with the landlord's alarm contractor.
From your call to the finished job
- Survey the door, header and exit path. Before choosing a magnet, we check what you're attaching it to. A header that flexes, a door that sags or a closer that slams will undermine any lock. We note the problems and, if necessary, fix them before the lock goes in.
- Design the release path and quote. We also confirm authority to modify the door. We need ID and proof that you own or manage the property, and tenants should have their landlord's permission, since mounting a magnet means drilling the frame.
- Mount the magnet and armature plate. Mounting is about alignment and solid anchorage. We check that the plate meets the magnet fully with the door closed and under slight pressure, that fasteners are tight and that nothing rattles loose. Glass doors use clamps; metal and wood doors use through-bolts.
- Run the power, sensors and fire alarm release. Wiring decides reliability. We use wire of the right gauge for the distance, land connections on terminals instead of twisting wires together, and fuse the supply. Exit devices get their own path, so one failed component can't trap anyone.
- Program credentials and set the timers. We set the door-held-open alarm, the lock's release delay and the sensor's hold time so they work together. Then we check that a credential, a button press and a sensor trigger each behave properly when tried separately and in sequence.
- Test every release and hand over. Testing covers power on, power off, credential, push button, motion sensor and fire alarm release, with the door pulled hard against the magnet. We also test the batteries, if installed, and show you how to check the system monthly.
How we quote the job
- Door type and mounting hardware. The door decides the bracket, and the bracket decides much of the cost. A standard header mount is inexpensive; custom or concealed mounting costs more. We show the price of each practical option so you can compare the clean look of a shear lock with a surface magnet.
- Power supply, backup and controller. Backup power is the most common optional upgrade. It keeps doors secure through short outages, but the batteries need replacing and the door still releases when they run out. We explain the tradeoff and price it separately. Decide what you are protecting, and for how long, before choosing battery size.
- Cable route and header access. Headers can hide surprises: steel, conduit, glazing channels or nothing solid to anchor into. We probe before committing, and our quote notes what we found and what might change once the frame is open. A header that turns out to be thin drywall or hollow aluminum means backing plates or a different mounting plan, and we would rather tell you that before drilling than after.
Every job gets a clear quote before any work starts. Call (951) 903-3193 with the details and we'll tell you what to expect for your situation in City of Industry.
Mistakes to avoid
- Assuming holding force equals security. A 1,200-pound magnet on a door with weak hinges, a thin frame or a gap at the edge can still be forced somewhere else. The door, the frame and the hinges matter as much as the magnet.
- Using a maglock where the door must stay latched. Fire-rated doors, some stairwells and other openings need hardware that latches positively, which a maglock does not do. Ask your building department before you specify one. If you are not sure how your door is classified, look for a label on the edge of the door or frame.
- Mounting the magnet to a hollow, thin or flexible header. It may feel solid when installed and then give way under a hard pull. Anchor into steel, solid blocking or a backing plate that spreads the load across the frame.
Advice before you book
- Test the exit button and sensor monthly. Press the button and confirm the door releases; walk toward the door from inside and confirm the sensor does the same. Put the test on a calendar, because exit devices are exactly the part nobody notices until it fails.
- If you rent, ask the landlord in writing before anyone drills the frame. A maglock may need removal when you leave, so keep a copy of the wiring diagram, the model information and any hardware that was taken out. The next tenant, and your landlord, will thank you.
- Keep banners, window film and signs off the header and away from the lock. Heat and adhesive can affect the magnet face and the sensor, and a sign can hide the release button. A tidy, visible door is a safer door.
- Don't plan a maglock for a door that must stay latched in a fire. Rated doors, stair enclosures and some corridors have specific rules. Ask your fire marshal or building department before you buy hardware, and tell your installer what the door is and where it leads.
Reaching City of Industry
City of Industry is about 46 miles from our San Bernardino base, roughly 52 minutes in light traffic via I-215 North to I-15 at Devore, I-15 South through Rancho Cucamonga and Ontario. When you call, you get an arrival estimate based on where the technician is and the traffic at that moment.
Stuck on the shoulder or in a parking lot along Hacienda Boulevard? Get somewhere safe, turn on your hazards, and give us the nearest exit or business so we can find the car without guessing.
About City of Industry: The Industry Hills Golf Club, with its Eisenhower and Zaharias courses at Pacific Palms Resort, was developed around 1980 on a former landfill near Azusa Avenue.
| Neighborhoods | Valley Boulevard corridor, Crossroads Business Park, Civic Center, Industry Business Center, Don Julian Road, Nogales Street and Fullerton Road |
|---|---|
| ZIP codes | 91744, 91748, 91745, 91746, 91789, 90601, 91732 |
| Main routes | SR-60, I-605, SR-57, Valley Boulevard |
| From our San Bernardino base | about 46 miles via I-215 North to I-15 at Devore, I-15 South through Rancho Cucamonga and Ontario, then SR-60 West (Pomona Freeway) through the 57/60 confluence; exit Fairway Drive for the east-end business parks and Metrolink station, Nogales Street, Fullerton Road or Azusa Avenue for central Industry and Puente Hills Mall, and Hacienda Boulevard for City Hall and the Homestead Museum. Alternate: SR-210 West to SR-57 South to SR-60 West |
Business lock or door work in City of Industry?
Call (951) 903-3193 with the address, the doors or hardware involved and when the site is open. We'll quote the job before any work starts and book a time within our hours that suits your schedule.
Frequently asked questions
What happens to a maglock when the power goes out?
It lets go. A magnetic lock holds only while powered, so a blackout, tripped breaker or failed supply releases the door unless battery backup keeps it energized. That is good for exit safety and a risk for security. We discuss backup batteries, a mechanical key lock for off-hours and, if the door must stay locked, a strike or electrified lockset instead.
Can you put a maglock on a glass door?
Yes. Tempered glass can't be drilled, so we use glass-door brackets that clamp the armature plate to the glass without holes, and we mount the magnet on a header, sidelight or mounting plate. We check the glass thickness, the pivot or hinge condition and the closer first, because a door that sags won't seat against the magnet.
Does a magnetic lock connect to the fire alarm?
Where a fire alarm system exists, the maglock normally drops out when it sounds, using a relay in the lock's power line. Some buildings add sprinkler or smoke detector release. The panel connection may need a licensed fire alarm contractor, and the release should be tested with them. We coordinate so testing doesn't surprise your alarm monitor.
Can a maglock be used outdoors?
Only models rated for outdoor exposure. Rain, dust, salt air and sun wear out standard indoor magnets. Outdoor-rated units, sealed wire entries and drip protection help, and corrosion-resistant plates matter near the coast. Exterior doors also see more wind and slamming, so the mounting has to be rigid, with the wire entry sealed against water.
Do magnetic locks use a lot of electricity?
A single lock draws only a few watts, but it draws continuously while the door is locked, unlike a strike. Several doors on one supply add up, which is why we size the supply and any battery backup for the total load. A properly sized supply also keeps voltage steady at the magnet, protecting holding force.
How do you confirm I'm allowed to modify my door?
Before we modify a door or lock, we verify ID and proof that you own, lease or manage the property, and tenants should have their landlord's approval for drilling the frame. It protects you as well as us. Our license is LCO7891, issued by BSIS, and you can verify it at search.dca.ca.gov.
How far is City of Industry from your base?
City of Industry is about 46 miles from our San Bernardino base, roughly 52 minutes in light traffic. Arrival time depends on traffic and on the job the technician is finishing, so we give you an estimate on the phone before you commit.
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