You will find that the relay fits common project boxes, which keeps builds tidy while still allowing easy access for future adjustments.
IDEC RR3PA-U AC 3PDT 11-PIN RELAY DC110V COIL & LUMBERG 111PGS DIN MOUNT SOCKET
With Somfy attached to this relay, you get a sense of quality that many projects seem to appreciate.
A nice touch is how this power relay pairs with many controllers, keeping setup friendly.