SKU: IOWC-1615
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HopeRF RFM119W-868S1 RF Module (868MHz, FSK/OOK)

₹94.00 (Inclusive of all taxes)
Out of Stock

The HopeRF RFM119W-868S1 is a single-chip FSK/OOK transmitter module for 240-960 MHz wireless applications, featuring programmable output power up to +13 dBm and ultra-low 20 nA sleep current for battery-powered IoT nodes.

Features

  • Wide 240-960 MHz frequency range supports global ISM band deployments.
  • Programmable RF output power from -10 dBm to +13 dBm for range vs. power optimization.
  • Ultra-low 20 nA sleep current enables multi-year operation on coin-cell batteries.
  • Simple DATA pin or TWI interface control for easy integration with microcontrollers.
  • Embedded EEPROM and RFPDK tools simplify development and configuration.

Out of stock

Description

The RFM119W-868S1 from HopeRF is a high-performance, cost-effective RF transmitter module designed for robust sub-1GHz wireless communication. Based on a single-chip architecture, it supports (G)FSK and OOK modulation schemes, making it suitable for a wide array of low-data-rate IoT and telemetry applications. Its flexible frequency range allows deployment in regional ISM bands including 433MHz, 868MHz, and 915MHz.

Engineered for extreme power efficiency, the module draws only 27.6 mA during transmission at +10 dBm output power and drops to a mere 20 nA in sleep mode, a critical feature for remote, battery-operated sensors. Configuration is managed either via a straightforward two-wire interface (TWI) for register access or through the integrated RFPDK for rapid prototyping, offering developers full control over deviation, data rate, and power output.

Key Features

  • Single-chip (G)FSK/OOK transmitter for simplified RF design and integration.
  • Extremely wide operational frequency from 240 MHz to 960 MHz for global compatibility.
  • Fully programmable features including output power, frequency deviation, and data rate.
  • Embedded EEPROM for storing configuration parameters without external memory.
  • Very low sleep current (20 nA) maximizes battery life in intermittent transmission scenarios.
  • Simple control via DATA pin level detection or two-wire interface (TWI) commands.
  • Compliant with FCC and ETSI regulations for commercial product deployment.
  • Pairs with CMT2219A receiver to form a complete, robust RF link solution.

Applications

  • Low-cost consumer electronics and wireless toys.
  • Home and building automation for lighting, fan, and blind control.
  • Industrial monitoring, telemetry, and control systems (IIoT).
  • Wireless alarm, security systems, and remote keyless entry (RKE).
  • Replacement for infrared transmitters in remote control applications.

Technical Specifications

Item TypeRF Module
Microcontroller/SoCRFM119W/RFM119SW Transmitter IC
Wireless Protocols(G)FSK, OOK
Frequency Range240 to 960 MHz
RF Output Power-10 to +13 dBm
Supply Voltage1.8 to 3.6 VDC
Operating Current (Tx)27.6 mA (FSK @ 868.35 MHz, +10 dBm)
Sleep Current< 20 nA
InterfacesDATA Pin, Two-Wire Interface (TWI)
Frequency Deviation1.0 to 200 kHz
Operating TemperatureNot Specified
Dimensions (LxWxH)17.8 x 12.8 x 4.9 mm

Frequently Asked Questions

How do I control the RF transmission with this module?

You can initiate transmission in two primary ways. The simplest method uses the DATA pin: a logic level transition starts sending, and holding the pin low for a defined period stops it. For advanced control, use the Two-Wire Interface (TWI, I2C-compatible) to send specific commands to the module's configuration registers, allowing precise control over transmission timing and parameters. The embedded EEPROM lets you store your preferred settings for power-on operation.

What is the typical power consumption during operation?

Power consumption depends on your configured output power. At a typical +10 dBm output in FSK mode at 868.35 MHz, the module draws approximately 27.6 mA from a 1.8V to 3.6V supply. Its most significant feature is the ultra-low sleep current of less than 20 nanoamperes (nA). For battery-powered projects, you should put the module into sleep mode between transmissions to achieve multi-year battery life, making it ideal for remote sensors.

Can I use this module with Arduino or other MCUs?

Yes, integration is straightforward. Connect the module's VCC and GND to your microcontroller's 3.3V supply and ground. Connect the DATA pin to any digital GPIO for basic on/off keying control. For full programmability, connect the SDA and SCL lines of the TWI interface to your MCU's I2C pins. You'll then need to write code (using libraries like Wire.h for Arduino) to configure the RF frequency, power, and deviation registers. The HopeRF RFPDK development kit can accelerate this process.

Package Includes

  • 1 x HopeRF RFM119W-868S1 RF Module

Additional Information

Weight 0.003 kg
Dimensions 1.78 × 1.28 × 0.49 cm