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description: Behavior of LEDs on Modbus, BACnet and HTTP receivers
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# Receivers

## LEDs on the electronic card

<table><thead><tr><th width="91">LED</th><th width="163.33333333333331">Behavior</th><th>Meaning</th></tr></thead><tbody><tr><td><mark style="background-color:green;">A</mark></td><td>Flash</td><td>The receiver has received a message</td></tr><tr><td><mark style="background-color:orange;">B</mark></td><td>Flash</td><td>The receiver has sent a message</td></tr><tr><td><mark style="background-color:green;">C</mark></td><td>ON</td><td>The receiver is correctly powered</td></tr><tr><td><mark style="background-color:orange;">D</mark></td><td>Flash</td><td>Communication message transmitted</td></tr><tr><td><mark style="background-color:green;">E</mark></td><td>Flash</td><td>Communication message received</td></tr><tr><td><mark style="background-color:red;">F</mark></td><td>OFF</td><td>LED not used</td></tr></tbody></table>

## LEDs outside the product

<table><thead><tr><th width="158.33333333333331">LED</th><th width="150">Behavior</th><th>Meaning</th></tr></thead><tbody><tr><td><mark style="background-color:red;">Exterior red</mark></td><td>Flash Every 1 minute</td><td>The receiver is in operation</td></tr><tr><td><mark style="background-color:green;">Green Ethernet port</mark></td><td>Flash</td><td>The receiver connects to the Ethernet network</td></tr><tr><td><mark style="background-color:orange;">Orange Ethernet port</mark></td><td>Flash</td><td>The receiver sends information to the Ethernet network</td></tr></tbody></table>

