Telemetry Receivers and Telemetry Transmitters from RS Components, Ltd.


7312735 -- View Larger Image

The RFM31B-868 is a highly integrated, low-cost 868MHz ISM-band receiver module. Built-in antenna diversity and support for frequency hopping can be used to extend range and enhance performance. An easy-to-use calculator is provided to quickly configure the radio settings, simplifying customers system design and reducing time to market. Available in DIP or SMD module format.
• Carrier Frequency Range: 848 to 888MHz ISM band. • Receiver Sensitivity: â€"121dBm @ 2kbps, GFSK. • OTA Data Rate = 0.123 to 256kbps. • Modulation: FSK, GFSK or OOK. • Frequency hopping (FHSS) capability. • Digital RSSI. • Wake-up timer. • On-chip crystal tuning. • Auto-frequency calibration (AFC). • Power-on-reset (POR). • Embedded antenna diversity algorithm. • Packet handler, preamble detector and CRC checker. • Supports Data Whitening and Manchester Encoding. • Receiver 64-byte FIFO. • Low-battery detector. • Temperature sensor and 8-bit ADC. • Host communication: serial SPI. • Power Supply: +1.8 to +3.6Vdc. • Power-saving modes: Tune, Ready, Sensor, Sleep, Standby, Idle and Shutdown. • Integrated voltage regulators. • Operating temperature range: -40 to +85°C. • Dimensions: 15.5 x 14mm (DIP), 16 x 16mm (SMD). • Applications: Remote control, Home security, Telemetry, Personal data logging, Tyre pressure monitoring, Wireless PC peripherals, Remote meter reading, Remote keyless entry, Home automation, Industrial control, Sensor networks, Health monitors and the Internet-of-Things (IoT)
731-2735 RFM31B-868-D 14-Pin DIP module,731-2739 RFM31B-868-S1 16-Pin SMD module
Module Type = Receiver
Supported Frequency Bands = 868 MHz
Modulation Technique = FSK, GFSK, OOK
Maximum RF Data Rate = 256kbit/s
Receiver Sensitivity = -121dBm
Supported Bus Interfaces = SPI
Supply Voltage = 1.8 - 3.6V
Dimensions = 14 x 15.5 x 5.9mm
Height = 5.9mm
Length = 15.5mm

Product Category
Telemetry Receivers and Telemetry Transmitters
Device Type
Performance Specifications
Operating Frequency
868 MHz
Data Rate
256 kbps
-121 dBm

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RF Modulation
Power Source
Supply Voltage
Communication Interface

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