Review on Uxcell A14071800Ux0297 General Purpose Socket: Reliable and Versatile Socket for All Your Needs by Tony Reid

The relays themselves seem decent enough but the bases. foundations. They sit very loosely on the DIN rail, so they can slip when you move the case. It's not really difficult, but they do need zip ties or locking blocks to hold them in place. The terminals are not marked. Again, this isn't a big deal, but be prepared to call them with a meter so you know where to make your connections. The fatal flaw, however, is an incredibly weak design. Slightly tighten the screws and the side panels will separate from the rest of the base, allowing the terminal to rotate. To be honest I ended up throwing those bases away and ordering the correct relays from Automation Direct. Again, the relays themselves seem decent, but such poor bases cause a low rating.