The Shelly Uni Plus comes with a ribbon cable that ends with bare wires, along with black wires on the other side:
To use the Shelly you need to make a cable that connects this to a 2×3 Dupont connector, that will plug into J10:
Adapter for Sale
Or else if you want to buy an adapter with a cable that you don’t have to solder or crimp, I have them available for $50:
Left picture is what I offer, the second picture is what it looks like installed.
If you wish to purchase this, email steve@devoreelectronics.com.
Wiring the cable
If you instead want to make your own cable, follow this diagram:
This shows what colors of the ribbon cable needs to go to which position. Note that pin 3, needs a connection to both one of the Out1 wires, as well as the green wire from the ribbon connector. Note the Out1 connection is the top set of black wires on the diagram above.
Unless you already have a crimper, the easiest solution is going to be to use precrimped Dupont wires, and solder them onto the existing wires.
I suggest this kit, as it has the right housing. (though you could also use 2 1×3 housings , or all individual jumpers if you don’t have a 2×3 housing available.
https://www.amazon.com/gp/product/B0GF7KN3P9/
Out2 option:
If you have version 1.26 or later (Purchased after August 15, 2026), you can also connect Out2. When this is connected you can use Out2 as an alternate way of stopping or starting the motor, similar to how Out1 works in Default mode. If you do hook this up, then one of the black Out2 wires needs to also be connected to pin 3, and the other black wire connected to pin 6.