Adding 2nd keypad to M1

[raymondh]

I've got one keypad and the ELK wireless receiver home run and it all works. I added a 2nd keypad and home run the power wires but ran the data a and data b back to the wireless receiver. Everything powers up but I can't get the 2nd keypad to enroll using the software and both keypads give me a buzzer sound when I try to use one. I have both keypads jumpered.

If I unplug one of the keypads (doesn't matter which one) everything works.

What should I check?

 

[Steve]

Does each keypad have a unique address? The first one enrolled will default to 1.

 

[Mike]

An option: Getting a databus hub might make things easier. It is cheap and takes out a lot of the complexity. I just bought a second one for my install.
It sounds like you are wiring this without one.

 

[robolo]

I've got one keypad and the ELK wireless receiver home run and it all works. I added a 2nd keypad and home run the power wires but ran the data a and data b back to the wireless receiver. Everything powers up but I can't get the 2nd keypad to enroll using the software and both keypads give me a buzzer sound when I try to use one. I have both keypads jumpered.

If I unplug one of the keypads (doesn't matter which one) everything works.

What should I check?

You should only have the jumper on the last keypad on the chain. Try removing one of the keypad jumpers.

 

[raymondh]

Does each keypad have a unique address? The first one enrolled will default to 1.

That was it, duh...