---
lang: "en"
title: "MW-R4B - RFID card reader with MODBUS interface"
sku: "MW-R4B"
canonical_url: "https://shop.marcomweb.it/en/modbus/mw-r4b-rfid-card-reader-with-modbus-interface"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

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MW-R4B - RFID card reader supporting MIFARE® Classic, Plus, Ultralight C, DESFire, ICODE® SLI, HID iCLASS (CSN only) and MODBUS interface

The readers are equipped with RS485 interfaces, integrated antenna, buzzer, touch button and programmable RGB LED diode. MW series readers also have two inputs and one output of any type. The readers work with OSDP (the latest standard with data transmission encryption, described in more detail in the article), Modbus RTU or Netronix transmission protocols.

## Technical Features

- Operating frequency 13.56MHz
- Supported standards
ICODE® SLI
MIFARE® Classic
MIFARE® DESFire
MIFARE® Plus
MIFARE® Ultralight C
iCLASS (CSN only)
- Interface RS485
- Protocol Modbus RTU
- Netronix OSDP
- Reading range up to 8cm*
- Operation "on metal" No
- Supply voltage 8 - 24V
- Maximum current consumption 120mA (typ. 25mA)
- Antenna Yes
- LED xml-ph-0025@deepl.intern
- From -20°C to +50°C
- Dimensions (mm) 83 x 44 x 14
- Type RFID Reader
- IP protection rating IP54

---

Source: https://shop.marcomweb.it/en/modbus/mw-r4b-rfid-card-reader-with-modbus-interface

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