TransferFi Wireless Power Network Lights Up Sensors up to 55 Meters Away

Wireless charging has been around for a while, and it usually placing a phone or other device on a charging pad. But back in 2018, Energous started to promote its near-field, mid-field, and far-field wireless charging solutions, with far-field meaning within a room. But so far, they only have released near-field devkits and products.

Singapore based TransferFi Pte has come up with its own wireless charging solution. TranferFi wireless power network (TFi WPN) aims to power sensors up to 55 meters away and specifically targets building and factory automation in order to help companies save on installation and cabling costs.


The solution works with a gateway powering up and receiving data from sensors wirelessly with a range of up to 55 meters.  The TFi Gateway Max Turin-1 covers up to 32 TFi Sense devices via multichannel beamforming supporting up to 16 channels and can be connected to Modbus, BACnet & Web services. The TFi Sense Turin-1 sensor node is powered by an unnamed Arm Cortex-M4 microcontroller and is equipped with a 3-axis accelerometer, a microphone, temperature, pressure, humidity & TVOC (Total Volatile Organic Compounds) sensors. It also includes proprietary encryption & AES-128, and transmit at up to 5 Hz.

TFI Sense Turin-1
TFI Sense Turin-1 Sensor Node

The technology is optimized to work in the 860MHz – 940MHz frequency ranges, but TransferFi can also offer the solution in the 2.4GHz – 5.8GHz bands on request. CNX Software was informed about the technology, and a representative explained:

All this is done through patented signal optimization and beamforming algorithms enhanced for long-range of Wireless Power Transfer (WPT) to more than 100m. We’re working on a developer kit which has loads of customization features for different sensors, communication ports, antenna and micro controllers.

I suppose the “Max” gateway is relatively pricey, as I understand the development kit will include TFi Gateway Lite Turin-1 instead which should just support one sensor nodes and have a shorter range.

TransferFi Gateway Lite

The sensor will be programmable sensor with control capabilities for Home IoT or project. The company did not disclose more information about the kit at this time, but a webinar entitled Introduction to wireless power is scheduled on April 22 at 11 am Singapore time for people wanting to know more.

We also asked the company how TransferFi compared to Energous:

The main difference with Energous is that we are truly long distance with transmission over 24-55m. Focus is on industrial Iot, enabling a digitization of a physical space.

The main advantage of the solution is the much lower installation costs as traditional wired sensor deployments waste 80% of the time on installation
& cabling, which represent more than 60% of the overall sensor deployment budget. The TFi WPN platform is said to reduce deployment time by 80%, and cabling and installation cost by 50%.

Further details may be found on the company’s website.

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