# Output Connection

The Gateway (both 4GW - E & 4GW - D) has a single output channel for connecting output. 

<table><thead><tr><th width="128.33333333333331">Device</th><th width="152">Pin Label</th><th>Digital Output Type</th><th>Rating</th></tr></thead><tbody><tr><td>4GW - E</td><td>NC COM NO</td><td>Relay SPDT</td><td>2.5A/14V DC<br>1A/250V AC</td></tr><tr><td>4GW - D</td><td>OP1</td><td>5V TTL (Active Low)</td><td>30mA</td></tr></tbody></table>

Refer to the image below to know the wiring of each output.

<figure><img src="https://1313992628-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdTvSz7jpW1e3wAaLdma4%2Fuploads%2F4sNuGI5vRMXlTFPrLAsm%2Foutput_collage.jpg?alt=media&#x26;token=57dac8c9-97b0-44c0-9bfe-8566f8443e1a" alt=""><figcaption><p>4GW-E (L) &#x26; 4GW-D (R)</p></figcaption></figure>