---
lang: "en"
title: "UHF 868 MHZ RS232 /RS485 RADIOMODEM, I/O"
canonical_url: "https://shop.marcomweb.it/en/uhf-radio/uhf-868-mhz-rs232-rs485-radiomodem-io"
brand: "MARCOM S.r.l."
---

## Available variants

---
title: "UHF 868 MHZ RS232 /RS485 RADIOMODEM, I/O — Variant: UHF Radio Modem Only (HPDL868)"
sku: "D540-211E00"
canonical_url: "https://shop.marcomweb.it/en/uhf-radio/uhf-868-mhz-rs232-rs485-radiomodem-io?config=1808"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

---
title: "UHF 868 MHZ RS232 /RS485 RADIOMODEM, I/O — Variant: D540 Radiomodem + lambda antenna/4 868"
sku: "D540-211E04"
canonical_url: "https://shop.marcomweb.it/en/uhf-radio/uhf-868-mhz-rs232-rs485-radiomodem-io?config=1809"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

---
title: "UHF 868 MHZ RS232 /RS485 RADIOMODEM, I/O — Variant: D540 Radiomodem + dipole antenna 868 (Jpole)"
sku: "D540-211E22"
canonical_url: "https://shop.marcomweb.it/en/uhf-radio/uhf-868-mhz-rs232-rs485-radiomodem-io?config=1810"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

---
title: "UHF 868 MHZ RS232 /RS485 RADIOMODEM, I/O — Variant: D540 Radiomodem + Yagi antenna 868"
sku: "D540-211E42"
canonical_url: "https://shop.marcomweb.it/en/uhf-radio/uhf-868-mhz-rs232-rs485-radiomodem-io?config=1811"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

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D540-211-EXX: UHF 868 MHZ RS232 /RS485 RADIOMODEM, I/O

The D5 series radiomodems, equipped with RS232 and RS485 serial ports, are devices that are fully configurable via software both locally and remotely via radio, with on-the-fly channel change directly from DTE.
The devices have an opto-isolated digital input and a relay output that can be used for radio transmission of signals and alarms.

Different operational profiles programmable via software allow data transmission in point-to-point, point-to-multipoint, broadcasting or address modes which, together with the digipeater function, allows packet routing in areas not directly reachable in a single hop.

## Features

- RS232 and RS485 serial connectivity
- Integrated I/O for signaling and/or alarm management. Mirror functionality for I/O transmission between two radiomodems
- Digirepeater functionality
- Interfaces: RS232-RS485 serial port.
- 1 digital input, 1 digital output

 

The different available codes correspond to different types of Antenna and antenna cable

Power supply must be ordered separately

---

Source: https://shop.marcomweb.it/en/uhf-radio/uhf-868-mhz-rs232-rs485-radiomodem-io

MARCOM S.r.l. — a trusted supplier for industrial automation and building automation.