RFID tag monitors exposure to light

8 April 2015 Telecoms, Datacoms, Wireless, IoT

The Shadow, made by Spanish company Farsens, is a battery-free RFID ambient light detector tag for use in automated applications where exposure to light of tagged assets changes during the process. Monitoring the changes allows the user to program a variety of procedures based on process time/status and the detector data. The device is usually embedded in sealed places where exposure to light is scarce.

Compatible with commercial EPC C1G2 readers, the tag features an LPRS N5AC501085 light dependent resistor (LDR) to detect exposure to light or darkness. It has a 96-bit EPC code, a 32-bit TID and a password protected kill command. Built in a PCB format, it is available in different sizes and has a communication range up to 1,5 metres.

These ambient light detector tags are available in a variety of antenna designs to suit specific applications. They can be embedded in a wide variety of materials such as plastics or concrete, and can also be encapsulated in an IP67 or IP68 casing for use in harsh environments. They can operate in temperatures spanning 30°C to +85°C.

The fact that the Shadow is fully passive makes it ideal for inaccessible or restricted areas and those where the use of batteries is not recommended. Since it will never require a battery change, it leads to savings on maintenance costs.

For more information visit www.farsens.com

Further reading:

Mobile satellite connectivity available in SA
Telecoms, Datacoms, Wireless, IoT
Space42 has commercially launched its next generation mobile satellite service, Thuraya 4 NGS, available in South Africa as of February 2026.

Read more...

---

Next-gen Wi Fi 6E connectivity for embedded systems
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
Espressif Systems has expanded its connectivity portfolio with the introduction of the ESP32-E22, the company’s first Wi-Fi 6E connectivity co-processor.

Read more...

---

Quectel redefines connectivity with RG660Qx 5G Series
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
Purpose-built to meet the demands of next-generation IoT and wireless broadband, these modules leverage the cutting-edge Qualcomm X85 and X82 5G Modem-RF systems to deliver enterprise-grade performance.

Read more...

---

Contactless IO-Link couplers
IOT Electronics Telecoms, Datacoms, Wireless, IoT
The IO-Link couplers from Phoenix Contact are industrial contactless couplers designed to transmit power and IO-Link data across a small air gap without physical connectors.

Read more...

---

Quectel’s RG255C-NA and RM255C-GL accelerate 5G RedCap adoption
iCorp Technologies Editor's Choice Telecoms, Datacoms, Wireless, IoT
Quectel’s RG255C-NA and RM255C-GL modules represent a strategic move into this fast-growing segment, delivering Sub-6 GHz 5G connectivity optimised for mid-tier IoT applications.

Read more...

---

SDRs – Which RF architecture should you choose?
RFiber Solutions Editor's Choice Telecoms, Datacoms, Wireless, IoT
There are several common methods of implementing SDR architectures. This paper discusses which is best when meeting a specific need.

Read more...

---

Multi-band GNSS patch antenna
RF Design Telecoms, Datacoms, Wireless, IoT
The Taoglas AHP2356A is a compact, high-performance active GNSS patch antenna designed for next-generation positioning systems requiring precision, reliability, and multi-constellation support.

Read more...

---

Cellular routers for explosive areas
Phoenix Contact Telecoms, Datacoms, Wireless, IoT
Updated versions of the Cellulink outdoor cellular router product range from Phoenix Contact are now available; they have been specially developed for use in Zone 2 potentially explosive areas.

Read more...

---

Power the next wave of IoT innovation
Links Field Networks Telecoms, Datacoms, Wireless, IoT
Links Field Networks’ portfolio includes connectivity platforms, edge devices, and network management tools designed to support secure, resilient IoT deployments across a range of use cases.

Read more...

---

Move to smart agriculture
Otto Wireless Solutions Telecoms, Datacoms, Wireless, IoT
Designed for precision agriculture, the RAKwireless SensorHub is a modular, industrial-grade IoT platform that collects real-time environmental and soil data across farming operations.

Read more...

---