868MHz Radio Modem with remote I/O control – RCQ5-868-H

Reliable Wireless RS232 Link up to 200kbps with Remote I/O Control

Plug & Play RF modem for industrial and IoT applications.

Ultra-low power consumption with WOR technology.

Easy integration, long range communication, and full remote I/O control via AT commands.

✅ Key Features

• Up to 200 kbps RF data rate (2-GFSK modulation)
• Long Range mode down to 2.5 kbps
• Transparent RS232 communication
• Remote I/O control (4 inputs / 4 outputs)
• Over-the-air configuration via AT commands
• Ultra low power consumption (sleep mode: 2 µA)
• Industrial temperature range (-20°C to +70°C)
• Compact size: 15 x 22 mm

🚀 Why choose RCQ5-868-H?

• No RF expertise required – ready-to-use modem
• Fast integration thanks to standard UART interface
• Reliable communication with CRC and preamble handling
• Data transmission + remote control in one single module
• Designed for industrial automation and telemetry applications

🔧 How it works

The RCQ5-868-H module creates a transparent wireless serial link between two devices.
Simply connect via UART (TTL level), and the module will handle all RF communication automatically.

Advanced control functions are available via AT commands, including:

• Remote I/O management
• Device configuration
• Status monitoring

⚙️ Advanced Functionalities

✔ Transparent Radio Modem
Send and receive serial data wirelessly without protocol complexity.

✔ OTA Command (Over-The-Air Control)
Control 4 digital outputs and read 4 digital inputs remotely using AT commands.

✔ Alarm Function
Automatic message transmission when a digital input changes state.

✔ Remote I/O Function
Mirror digital inputs directly to remote outputs in real time.

📡 Applications

• Industrial automation
• Remote monitoring systems
• Wireless alarms
• IoT gateways
• Building automation
• Telemetry systems

📊 Technical Specifications

• Supply Voltage: 1.8V – 3.6V
• RX Current: 5.8 mA
• TX Current: 13.4 mA (+10dBm), 24.9 mA (+14dBm)
• Sleep Mode: 2 µA
• Frequency Range: 866 – 870 MHz
• RF Output Power: up to +14 dBm
• Sensitivity: -110 dBm (50 kbps), -118 dBm (2.5 kbps)
• Operating Temperature: -20°C to +70°C
• Dimensions: 15 x 22 mm

📊 Download Documentation

DATASHEET =========== BROCHURE

🎬 See it in action

Watch how the RCQ5-433 works in real applications:

🛒 Ordering Information

• ✔ In stock – ready for shipment
• ✔ Ideal for prototyping and industrial production
• ✔ Technical support available

🇮🇹 Designed & Manufactured by Radiocontrolli

• CE-compliant RF design
• Long-term product availability
• Direct support from engineering team
• Made in Italy quality and reliability

The functionalities of the device RCQ5-868-H are the following :

- Radio Modem with AT Command (Transparent Transmission Protocol)

The RF modem is very simple to use and provides a wireless RS232 link with a RF data rate of up to 200kbps (2-GFSK modulation).

The module can work also in Long Range Mode (LRM) with a RF data rate egual to 2.5kbps.

The transceivers has the functions of a complete radio modem and simply require CMOS/TTL data at the transmit input and the corresponding transceiver(s) output

the same data. Preamble and CRC are automatically generated and added to the RF transmission.

- Over The Air Command (OTA Command)

The module has the ability to manage No. 4 digital outputs and No. 4 digital inputs both locally and remotely (OTA Command) by sending simple AT commands.

- ALARM Functionality

With this function, when a digital input change status (DEVICE A) a message will be transmitted via UART to the DEVICE B : “Alarm_0_1

- Remote I/O Functionality

This is two-way transmission used in the field automatic control. It is possible Turn ON and turn OFF the remote IO mirroring function.

When we enable the Remote I/O function, if any Digital Input is change on the Station A, the digital output of the remote Station B will also mirror these states at the same time.

The Evaluation KIT

N. 2 Evaluation Board with SMA Antenna

N. 2 USB Cables