# NWIN002 2xPt100 temperature

The NWIN002 node has connectors for two 4 wire Pt100 sensors and can be battery or battery and DC powered. 

<figure><img src="https://2429681196-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0vLm0km8knyJJgcLOzxB%2Fuploads%2Fh0oya1fF4zNlfA7Oiz6H%2Fimage.png?alt=media&#x26;token=4e31f164-40dd-4325-8748-69c332a7182f" alt=""><figcaption></figcaption></figure>

* The green connectors for Pt100 4 wire sensors (marked 1 for index 0 and 2 for index 1 sensor) can be disconnected by pulling them upwards away from the circuit board. The sensor wires shall be screwed tight to the connector to minimize the connection resistance. The 2 pairs of wires from two sides of 4 wire PT100 sensor shall be connected to left and right pairs of pins of the sensor connector respectively. If a sensor with 2 or 3 wires is used, then the not used connector pin must be shorted with its pair. It is not recommended to use 2 or 3 wires sensors because the wires resistance will not be compensated which will introduce the measurement error.

<figure><img src="https://2429681196-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0vLm0km8knyJJgcLOzxB%2Fuploads%2FuIdtNTiMolK5BC2vj3Tc%2Fimage.png?alt=media&#x26;token=b4fb5e76-d0a5-41c6-ad82-1badc0175513" alt=""><figcaption></figcaption></figure>

* There is a holder for 2 AA batteries.
* A DC jack (5) is used to supply the node from an external 9-12 V power supply. &#x20;
* There is a send and reset button (4) on the left side of the board. Please make sure that no cables can press this button.
* A transmission LED (3) is in the top left corner of the board. It blinks every time the node sends data to the gateway.
* The blue hinge can be removed for easy routing of cables as described in [enclosure-opening](https://help.boomerang3.com/win-gateway-installation-manual/mechanical-installation/enclosure-opening "mention").
* The cable slot is used to route the sensor cables as described in [cables-routing](https://help.boomerang3.com/win-gateway-installation-manual/mechanical-installation/cables-routing "mention").