Re: Wireless Door Lock Sensor

["Crash Gordon" <webmaster@xxxxxxxxxxxxxxxxxxxxx>]

I agree totally slick when finished...a little scary drilling through an
expensive door


"Jackcsg" <nospam@xxxxxxxxxx> wrote in message
news:Ceqdnc2E_dPD-MPeRVn-sg@xxxxxxxxxxxxxxx
|I did an access control system for a Nationwide Home Builder's
Headquarters.
| 36 doors.
| $1,700.00 for the Mahogany door. $900 for the powered mortise handle, gold
| plated (cost). Can't remember what the powered hinges were, seemed like
| around $3/400. HID Prox readers, 1078 door contact. And yes, I drilled all
| them freakin doors! I have to say though...it was nice when it was done.
| I've seen the mortise handles in the 5K range. The cylinder lock sets
aren't
| too bad, they start around $80 and go up. You still need the powered hinge
| though, and they're still a few hundred bucks.
| $99.00 alarm with a $2,750.00 door lock! You could sell them all day in AZ
| Crash!
|
| "Crash Gordon" <webmaster@xxxxxxxxxxxxxxxxxxxxx> wrote in message
| news:26t7f.9$_j6.323@xxxxxxxxxxxxxxxxxx
| > Man, I did a custom home a few years back with motorized bolts with
locked
| > status...what a freeking pain. The door itself had to be drilled for the
| > lock wiring which then connected to special hinges with carried voltage
| etc.
| > Needless to say it was a very very expensive install. I was really glad
I
| > didn't havet to install the lockset and the door guys somehow drilled
the
| > longitudinal hole for they're wires which made it easy for us. The cost
| with
| > the custom door, door frame, hardware, lockset, our prox readers had to
| have
| > come close to 10K per door.
| >
| > I know most homeowners are not in the above bracket...indeed some
wouldn't
| > even pay 100 bucks per door.
| >
| >
| >
| > "Jackcsg" <nospam@xxxxxxxxxx> wrote in message
| > news:B_WdnW8uIPgux8PeRVn-qw@xxxxxxxxxxxxxxx
| > | Bill, relax. You're going into hyperdrive. There are many
manufacturers
| > who
| > | have been doing this type of application for years. The nicest, but
not
| > | cheapest, way to secure a residential door is by utilizing a power
lever
| > | set. The handle provides truly "locked" feedback, and can be used in
| > | conjunction with a door "shunt"switch/contact. It gets away from
| > installing
| > | a door strike into the frame, which doesn't offer the locked status of
| the
| > | lever.
| > | Here's the Manufacturer we use  www.marksusa.com
| > |
| > |
| > | "Bill" <bill190nospam@xxxxxxxxx> wrote in message
| > | news:3s702aFmivq3U1@xxxxxxxxxxxxxxxxx
| > | > The problem with "door lock sensors" would be; the locks themselves,
| the
| > | > doors, the jambs, and maintenance/replacement of all of these.
| > | >
| > | > Wood doors will grow or shrink with humidity changes. So if you have
a
| > | > switch in the jamb which detects that a dead bolt is thrown, you may
| > have
| > | > trouble adjusting it if the door is growing and shrinking with
| humidity
| > | > changes.
| > | >
| > | > Then hinges will come lose and the alignment of the door may change.
| > | >
| > | > Switches located in the jamb would need maintenance and adjustment.
| Say
| > a
| > | > new door and deadbolt was installed with a longer "throw". You would
| > need
| > | to
| > | > be able adjust the switch back for the longer throw. So access
covers
| to
| > | the
| > | > switches would be needed as well as a method of adjusting the
switch.
| > | >
| > | > Some safe/vault doors have such sensors. But you have an all metal
| door
| > | and
| > | > jamb along with a precision locking system.
| > | >
| > | > Install switch in locksets only? Most residential locksets are far
| from
| > | > being precision devices. Imagine some sort of switch in a cheap
| > | residential
| > | > regular door knob - the kind where there is so much play, you can
| wobble
| > | the
| > | > whole thing every which way.
| > | >
| > | > I would think the best solution would be a precision lockset
| > specifically
| > | > designed for this. The deadbolt would probably be easy. But the door
| > knob
| > | > lock would need to be a positive "locked" "not locked" design
without
| > any
| > | > play or in-between allowed.
| > | >
| > | > Also if it is a wired device, the wire to the door is prone to
wearing
| > out
| > | > and needing replacement. (As is with businesses with gless break
| sensors
| > | on
| > | > their door windows.)
| > | >
| > | >
| > |
| > |
| > |
| >
| >
|
|