Red Jumper & Relay question

[luisgepeto]

Hello all
I have just received my smart pi and reading through the manual I see there is no documentation regarding the red jumper provided in the assembly kit. I also notice that there are two pins that face outward next to the RS485 connection. I guess that the red jumper should go installed here, however I do not know what it is for. 

Another question I have is, what is the relay connection for? 
Greetings
Luis.

[jens]

Hello, Luis,

The jumper is the terminating resistor for the RS485 bus.
Since we are not using the RS485 bus at the moment, the position does not matter.

Greetings Jens

[luisgepeto]

Thanks for your answer Jens
Do you have any information regarding the relay connection?
Greetings
Luis

[jens]

The relay is connected to GPIO 18 and can switch approx. 1A and 230V. If a higher amperage is to be connected, a second relay has to be used.
In the NodeRed interface there is a relay node at the bottom.
Instructions for the node-red are coming. We are currently revising the homepage. Sorry we're not so fast with the documentation.

Greetings Jens