We use these ridiculous little scans for 4 years. I say ridiculous because of the price ...
In fact, this product is a boon for small providers or large mobile disco.
It is compact, lightweight and precision as well as its brightness replaces many lyres 250msd heavier and expensive.
8-channel DMX enough to create beautiful effects, and SM6 can also operate autonomously.

Currently, we have beautiful machines (lyre & scan) on the park. Whether it's roads or lighteux, they still insist to take these things in benefits.

Reliability side, only one card worries DMX in 4 years (2 machines out of 12)
This worries from a dry contact between a "centipede" plug and socket. Solved quickly with a little bomb contact. The symptom is a blinking (or extinction) of the display DMX
You just open the head, gently disconnected processors, spend some bomb (or graphite grease) and voila.
I would add having this problem on a lyre Martin ...