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This is a small simple module to enable your 1-Wire network to sense temperature. It is available to purchase in our online store. 
(click on any photo to see a larger version) It consists of a DS18B20 sensor mounted on a PCB together with two RJ45 sockets, a 3 way screw terminal block, a 1N5817 diode and a jumper and is available as either an assembled module, kit of parts or as a bare PCB. The PCB is 55x40mm. The RJ45 sockets overhang by around 2mm giving an overall module size of 55x42mm. The module is 20mm high. The RJ45 sockets allow you to connect the sensor inline in a network built with standard cat5 network cables without the need for any tools. They are wired to the common standard as described on our wiring information page. The screw terminals allow you to wire bare cables into the sensor if you prefer to make your connections that way. The diode is to clamp down any voltage spikes on the network that might cause unreliable readings. The jumper allows you to select the power mode for the sensor. Most people will use the parasitic power option but if you have a large network or wish to reliably read higher temperatures then you may wish to feed a seperate 5V supply to the sensor. This can be done either via the RJ45 connectors or the screw terminals. Wiring Examples Below you'll find an a few basic examples of how you might connect an SWE1 module into a 1-wire network. Click on the images for larger versions. The examples all use a DS9097U-009 serial host adapter but of course a DS9490R USB one will work just as well. These images show an old version of the SWE1 but the current one is electrically identical so can be wired in exactly the same ways.
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