This board, deloped in cooperation with openenergymonitor.org is a perfect way to connect multiple wired temperature sensors (such as the SWE0a we sell) into your network.
This module is a very simple passive device with a total of two RJ45 sockets and six sets of 3 pin screw terminals connected in parallel.
The PCB is 61x36mm. The RJ45 sockets overhang by around 6mm giving an overall module size of 67x36mm. The module is 20mm high. The mounting holes are on 38x26mm centres and are 3mm in diameter.
It should be noted that this is a passive device and not an active 1-Wire hub and as such the lengths of the cables on the attached devices should ideally be less than 3m in order to ensure reliability of the network. In practice, however, you can often get away with much longer cables but this cannot be guaranteed.