Re: And Now for something completely different!!!

[Bob La Londe <none@none.com99>]

On 11/2/2022 6:42 PM, ABLE1 wrote:
> On 11/2/2022 9:06 PM, Jim Davis wrote:
>> On Tuesday, November 1, 2022 at 9:06:33 PM UTC-4, ABLE1 wrote:
>>> On 11/1/2022 4:11 PM, Bob La Londe wrote:
>>>> On 11/1/2022 1:02 PM, ABLE1 wrote:
>>>>> On 11/1/2022 3:18 PM, Bob La Londe wrote:
>>>>>> On 11/1/2022 11:45 AM, ABLE1 wrote:
>>>>>>> Hey guys!!
>>>>>>>
>>>>>>> I am having challenge and thought I would reach out to
>>>>>>> get some quality input!!
>>>>>>>
>>>>>>> I am in need of a small programmable keypad that would have
>>>>>>> a single N/C relay contact that is Weather resistant.
>>>>>>>
>>>>>>> That is Battery Operated.
>>>>>>>
>>>>>>> I know! I know!! The Battery Operated part is the tough part.
>>>>>>>
>>>>>>> But............... maybe someone could give a hint of who
>>>>>>> might make something close.
>>>>>>>
>>>>>>> Any thoughts??
>>>>>>>
>>>>>>> Thanks,
>>>>>>>
>>>>>>> Les
>>>>>>
>>>>>> IEI used to have some decent weatheproof keypads that are 12V, but
>>>>>> like you said... battery.  I can see why you might not be able to
>>>>>> share more of the application, but an idea of estimated usage, idle
>>>>>> current, active current, any secondary current, cycle frequency...
>>>>>> might give you some quidelines as to whether you could get away with
>>>>>> something like a gell in a box. Or a gell in a box with a solar
>>>>>> charger.
>>>>>>
>>>>>> I once ran an entire alarm panel with cellular off a 60 watt panel
>>>>>> using a small rack of gells and an inverter.  Several of them
>>>>>> actually in unpowered model homes.  Of course I have the privilege of
>>>>>> living in a place where a restaurant once advertised free meals any
>>>>>> day the sun doesn't shine.  They paid off once, but technically they
>>>>>> didn't have to.   The sun broke through just before sunset.
>>>>>>
>>>>>>
>>>>>
>>>>> Hi Bob,
>>>>>
>>>>> This is for a AirB&B to give access to the building.  There is no
>>>>> available power source.  And in trying to get wire there would need
>>>>> at least 2 Quarter Sticks of Dynamite.   The usage would be maybe
>>>>> four time a day when occupied.  A GelCell would work but then the box
>>>>> would need to be of an undesirable size.  I was thinking if there was
>>>>> a keypad maybe a 2x4 box with a 3 Volt Lithium would last maybe
>>>>> 6 months could do the job.
>>>>>
>>>>> There are a lot of factors to make this work.  But, if only someone
>>>>> would have said 2 years ago to plan for a AirB&B for this unit life
>>>>> would be so MUCH easier.  For now the plan is to use a key in a lock
>>>>> box on the door knob.
>>>>>
>>>>> I had looked at IEI Linear before but there does not seem to be one
>>>>> that fits the bill.
>>>>>
>>>>> Thanks for the almost hint!!
>>>>>
>>>>> Les
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>> How about a regular digital entry lock.  You can buy one at Home Depot
>>>> or Amazon.  Maybe WalMart and certainly eBay.  I bet even ADI has one.
>>>> Tri-Ed might have one, but they would send you something else, say it
>>>> was your fault, and then refuse to sell to you again if you complain.
>>>>
>>>> Funny.  I just saw Anixter owns Tri-Ed now.  I wonder if they are upto
>>>> Anixter service levels now, or if Tri-Ed dragged Anixter down to their
>>>> level.  I used to buy some government spec data products from Anixter.
>>> Yes, one of those digital entry locks would work if it wasn't for the
>>> new panic hardware installed on the door. Well maybe, I am not going
>>> to get involved with trying to find something that will match up
>>> properly. I actually have a Aiphone Apartment access GT series that is
>>> connected to a door strike. The problem is that when I wired it there
>>> was no pathway for pulling additional wires. So the 24vdc digital
>>> wire that does all the power and communication for the call stations
>>> can't be used to power anything else.
>>>
>>> My thinking is that if I had a battery operated keypad w/ relay I could
>>> connect in parallel to the Aiphone relay to the strike.
>>>
>>> Maybe I need to figure out a way to get a clean 12vdc wire to the
>>> keypad. It is finding a good 120vac source that can be used for a
>>> easily/properly 12vdc wall wart installed.
>>>
>>> I need to spend more time on site to think this out.
>>>
>>> Later,
>>>
>>> Les
>>
>> Just saying but wont any kind of out door accessory keypad expose the
>> building to unauthorized entry to anyone with just a little bit of
>> knowledge about relays etc ?
>>
>> Don't you think?
>>
>> You'd need a secure box to mount it on and rugged mounting for the box
>> and security screws on the keypad, metal pipe or otherwise protected
>> wires to solar or other power protected too.  $ $ $
>>
>> Sounds like a source of "worms" to me.
>
> I know Jim!!  But, the customer wants something.  There are challenges
> and pit falls.  I plan on doing a lot of extra design and planning.
>
> The door just get you inside the apartment building hallway.
>
> If someone wanted to be stupid they could just press one of the
> apartment call buttons and then tell a story to convince the apartment
> dweller to press the lock button on the tenant station.
>
> Yes, conduit, rugged mounting, security screws!!!
>
> Thanks for the input and have a better day!!
>
> Les
>

... or press all the buttons and wait for somebody to buzz them in
without even hearing who it is.

--
Bob La Londe
CNC Molds N Stuff


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