# RS232 and RS485

## {{@264#bkmrk-open-iot-and-iiot-ga}}

The Gateway has 4 RS232/RS485 sockets depending on the version.

#### P10 (4x RS232)

The P10 gateway is equipped with 2x ST3232BTR to ensure transmission in RS232 standard.

<div drawio-diagram="1207"><img src="https://doc.redisage.com/uploads/images/drawio/2025-01/drawing-29-1737719852.png" alt=""/></div>

#### P11 (4x RS485)

The P11 gateway is equipped with 2x MAX481CSA to ensure transmission in RS485 standard.

<div drawio-diagram="1209"><img src="https://doc.redisage.com/uploads/images/drawio/2025-01/drawing-29-1737720135.png" alt=""/></div>

#### P12 (2x RS232, 2x RS485)

The P12 gateway is equipped with 1x ST3232BTR and 2x MAX481CSA to ensure transmission both in RS232 and RS485 standardsm

<div drawio-diagram="1208"><img src="https://doc.redisage.com/uploads/images/drawio/2025-01/drawing-29-1737719953.png" alt=""/></div>