Welcome, Guest. Please login or register.
May 19, 13, 12:55AM
Home Help Search Login Register
News:

+  Do It Yourself Home Security Alarm Forum
|-+  Technical Support
| |-+  Elk Technical Questions
| | |-+  Garage door opener and M1Gold		 « previous next »
Pages: [1] Print
Author Topic: Garage door opener and M1Gold  (Read 1846 times)
dudu_georgescu
Jr. Member
**

Karma: +0/-0
Posts: 34
« on: Nov 19, 10, 05:06PM »
I want to be able to open a garage door when pressing a button on the keyfob. I have the Craftsman equivalent of the following garage door opener: Liftmaster Elite 3585.  The garage door opener is used in conjunction with the LCD remote.

Ok, so I understood that I can use the onboard relay for one garage door opener. However I have two doors and therefore I need to buy another relay. Which one should I buy?

Imho I need SPDT contacts (but please correct me if I am wrong).

a) ELK-M1RB. However the instruction manual mentions 24 VDC wires ... and this is 12 VDC ...
b) ELK-924 --> this seems to be a bit of an overkill because of the DP switch ...
c) ELK-912B--> looks good to me (24 VDC)
d) something else?

The next question is: I understood that I need to connect the wires from the relay to the trigger connection of the garage door opener. But where is that?

a) Namely, do I connect the wires at the terminal outputs of the garage door opener (red + white) where the LCD remote is connected.
b) Do I connect them at the LCD remote
c) do I need to actually tear the garage door opener/ LCD control to pieces and actually find the trigger contact and connect the relay wires there.

Appreciate it,

George

Edit: remove links
« Last Edit: Nov 29, 10, 07:44AM by admin » Logged
DEL Installations
Tech Advisor/Moderator
*

Karma: +200/-0
Posts: 8483


Low voltage and communications contractor
« Reply #1 on: Nov 24, 10, 09:47PM »
You're going to be using a dry contact relay in parallel with your existing pushbutton, shorting will open the OHD.

Your opener has 2 conductors feeding the button, you'll wire in parallel to those, non polarity sensitive.
Logged
Electronics usually don't work as intended once the magic smoke is released from them

I'd like to be called sir at least once without being followed with "you're making a scene"
dudu_georgescu
Jr. Member
**

Karma: +0/-0
Posts: 34
« Reply #2 on: Nov 24, 10, 10:42PM »
Gotcha, I was worried that shorting the two wires might not do the trick and that those wires are some sort of data bus (since the LCD remote incorporates a movement sensor, and somehow that movement sensor triggers the garage door opener to light up).
Logged
DEL Installations
Tech Advisor/Moderator
*

Karma: +200/-0
Posts: 8483


Low voltage and communications contractor
« Reply #3 on: Nov 28, 10, 11:28AM »
I would verify with a meter first, as generally data pulses can be "seen" using a VOM on DC volts.

I'd wager that the unit is only pulling power from the opener and all other operations are contained within the pushbutton.
Logged
Electronics usually don't work as intended once the magic smoke is released from them

I'd like to be called sir at least once without being followed with "you're making a scene"
dudu_georgescu
Jr. Member
**

Karma: +0/-0
Posts: 34
« Reply #4 on: Jul 02, 11, 09:07PM »
Yep, works as a charm. Used one SPDT relay for each garage door (M1RB), wired directly to the pushbutton (LCD remote in my case) terminals, and it works Smiley
Logged
Pages: [1] Print 
« previous next »
Jump to:  


Login with username, password and session length