HopeRF RFM42B-868-D RF Transmitter Module 868 MHz, 1.8 → 3.6V

  • RS Stock No. 731-2748
  • Mfr. Part No. RFM42B-868-D
  • Manufacturer HopeRF
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): HK
Product Details

RFM42 868MHz ISM Transmitter, HopeRF

The RFM42B-868 is a highly integrated, low-cost 868MHz ISM-band transmitter module. The direct digital transmit modulation and automatic PA power ramping ensure precise transmit modulation and reduced spectral spreading ensuring compliance with global regulations including FCC & ETSI. An easy-to-use calculator is provided to quickly configure the radio settings, simplifying customer's system design and reducing time to market.

Carrier Frequency Range: 848 to 888MHz
RF Output Power: +1 to +20dBm
Data Rate = 0.123 to 256kbps
Modulation: FSK, GFSK or OOK
Wake-up timer
Frequency hopping capability
On-chip crystal tuning
Integrated 32kHz RC or 32kHz crystal
Power-on-reset (POR)
Configurable packet handler
Tx 64-byte FIFO
Low battery detector
Temperature sensor and 8-bit ADC
SPI serial data interface
Power Supply: +1.8 to +3.6Vdc
Low Power Consumption: 85mA @ +20dBm
Ultra low power shutdown mode
Operating temperature range: -40 to +85°C
Integrated voltage regulators
Package style: 14-Pin DIP module (RS 731-2748), 16-Pin SMD module (RS 731-2741)
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)

Wireless Modules - HopeRF

Attribute Value
Module Type Transmitter
Supported Frequency Bands 868 MHz
Modulation Technique FSK, GFSK, OOK
Maximum RF Data Rate 256kbit/s
Maximum Output Power +20dBm
Supported Bus Interfaces SPI
Supply Voltage 1.8 → 3.6V
Dimensions 14 x 15.5 x 5.9mm
Height 5.9mm
Length 15.5mm
Maximum Operating Temperature +85°C
Minimum Operating Temperature -40°C
Width 14mm
2 In stock for delivery within 5 working day(s) (Global Stock)
Price (ex. GST) Each
$ 13.01
(exc. GST)
$ 14.31
(inc. GST)
Per unit
1 - 9
10 - 49
50 +
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