A way to get fingerprint readers and wireless keypads cheaply

S

signal15

Senior Member
Weigand compatible fingerprint scanners cost $600+, which is ridiculous.

If you bought one of these receivers:
http://www.aclickawayremotes.com/Liftmaste...5mhz/index.html

And these fingerprinter scanners:
http://www.northshorecommercialdoor.com/li...keyless-en.html

You could hook the receiver to an input on the ELK, and have it trip an output for a door strike when it was activated. $125 total investment, and they're wireless so I don't have to have a keypad near each location for a weigand interface. I'm assuming all these receivers do is bridge the red and the white wire together just like the buttons do when they are activated. Anyone have one they can test with?
 
Hah! It will work. Check out the manual for the receiver:

http://www.tdsupplies.com/Literature/Liftm...312hmManual.pdf

You can power it with either 12 or 24 volts, and the jumper can be set for momentary or continuous button press simulation. Set it for momentary, and power it directly off the 12V from the ELK. I'm trying to find a multidoor receiver that is compatible with the fingerprint readers so I can put them in multiple locations without buying a separate receiver for each one.

This could also be used to implement remote wireless keypads for arming/disarming. Toggle a phantom output with it to arm/disarm a remote garage that isn't wired, etc.

Sweet!
 
Looks like the LiftMaster ULTRX315R250 is a 4-channel receiver. 2 relay outputs, and 2 transistor outputs. What would 2 transistor outputs mean?
 
You could use that liftmaster receiver to control any number of things from a standard wireless garage door opener frequency. I am thinking what would I like to do with the buttons that are built into my car.
 
Interesting idea, but I would not use those for anything that requires a lot of security. Did you see the "Myth-Busters" episode where they fooled finger print readers with some very simple methods? At one point they lifted someone's print off a CD case and used it to circumvent one of them. Not great if you ask me, considering it's as if you were walking around leaving post-it notes with your bank PIN number on them everywhere you go.
 
Quixote_1 said:
Interesting idea, but I would not use those for anything that requires a lot of security. Did you see the "Myth-Busters" episode where they fooled finger print readers with some very simple methods? At one point they lifted someone's print off a CD case and used it to circumvent one of them. Not great if you ask me, considering it's as if you were walking around leaving post-it notes with your bank PIN number on them everywhere you go.
Click to expand...
If a would be "prowler" is going to take the time to "lift fingerprints" he's breaking through the door. These are as good as any other lock. They keep the honest people out.
 
Most standard locks can be picked by a slightly practiced person in less than 5 minutes too. Perhaps the door unlocks with the fingerprint but have your security system shut off via a different mechanism.
 
Lou Apo said:
Most standard locks can be picked by a slightly practiced person in less than 5 minutes too. Perhaps the door unlocks with the fingerprint but have your security system shut off via a different mechanism.
Click to expand...

I agree. But, if a potential burglar has the time to lift your fingerprints, acid-etch a circuitboard with your fingerprint into it, and then make a fake gelatin replica of your fingertip... He most certainly has enough motivation to cut any phone/internet lines and buy a $30 cellular jammer off the internet.

I'm looking at them primarily for an iron gate and a garage service door anyway, not necessarily for disarming the alarm system in the area for the main house.
 
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