Wireless Power Transfer Demo Unit <Power Supply and Communication Underwater Achieved>

Wireless power supply is possible in enclosed spaces! The receiving circuit can be individually recognized by ID.

We would like to introduce our "Wireless Power Transfer Demonstration Device." The receiving circuit is installed underwater, and wireless power is transmitted through glass from the power transmission circuit to the receiving circuit. The power transmission circuit collects sensor information simultaneously with wireless power transfer. This can be applied to monitor the vacuum level of a vacuum chamber, as well as the temperature inside a constant temperature bath. 【Features】 ■ Receiving circuit installed underwater ■ Wireless power transfer through glass from the power transmission circuit to the receiving circuit ■ Water temperature measured with a temperature sensor mounted on the receiving circuit ■ Power transmission circuit collects sensor information simultaneously with wireless power transfer ■ Monitored temperature displayed on a PC ■ Receiving circuit can be individually recognized by ID *For more details, please refer to the PDF document or feel free to contact us.

• Other contract services

Sensors can be replaced with various types! They can be applied to equipment condition monitoring devices and more.

We would like to introduce our "Wireless Power Transfer Demo Unit." A brightness sensor, temperature sensor, and receiving circuit are installed on a rotating table, allowing for wireless power transfer from the transmission circuit to the receiving circuit. The transmission circuit collects sensor information simultaneously with wireless power transfer. The sensors can be replaced with various types, making it possible to install them in locations that were previously not feasible. 【Features】 ■ Brightness sensor, temperature sensor, and receiving circuit installed on a rotating table ■ Wireless power transfer from the transmission circuit to the receiving circuit ■ Activation of each sensor connected to the receiving circuit ■ The transmission circuit collects sensor information simultaneously with wireless power transfer ■ Monitor sensor information on a PC *For more details, please refer to the PDF document or feel free to contact us.

• Other contract services

Up to 50W output is possible! It can be used for practical evaluations incorporated into your products.

We would like to introduce our "High-Frequency Power Board." By using our wireless power evaluation high-frequency power board and reference antenna, you can confirm the operation of wireless power transmission. The high-frequency power board can output up to 50W, and with the reference antenna, it can operate with a load of up to 35W at a power transmission distance of 40mm. We also accommodate custom antenna designs according to your requests, so please feel free to contact us when needed. 【Features】 ■ Uses our wireless power evaluation high-frequency power board and reference antenna ■ High-frequency power board can output up to 50W ■ Reference antenna can operate with a load of up to 35W at a power transmission distance of 40mm ■ Operates LED tape (12V) and fan (5V) as loads ■ The output start switch allows you to toggle the LED and fan On/Off by waving your hand *For more details, please refer to the PDF document or feel free to contact us.

• Printed Circuit Board
• Circuit board design and manufacturing
• Embedded system design service

We can accommodate specification changes according to your requests! Since there are no special controls or circuits, it is suitable for initial consideration of antennas.

We would like to introduce our "High-Frequency Power Supply Board for Wireless Power Transfer Evaluation." You can change the output frequency using setting pins and a variable resistor, and we also support the design, prototyping, and evaluation of antennas and peripheral circuits. This can be used as a high-frequency power supply circuit to operate wireless power transfer devices at various operating frequencies. 【Features】 ■ Output frequency can be changed using setting pins and a variable resistor ■ Custom specifications can be accommodated based on your requirements ■ Support for the design, prototyping, and evaluation of antennas and peripheral circuits ■ Can be used as a high-frequency power supply circuit ■ Suitable for initial consideration of antennas due to the absence of special controls or circuits *For more details, please refer to the PDF materials or feel free to contact us.

• Printed Circuit Board
• Circuit board design and manufacturing
• Embedded system design service

Wireless power transfer technology selected for the "Kansai Manufacturing Selection 2018" by the Kinki Bureau of Economy, Trade and Industry.

"Wireless power transfer," also known as wireless power transmission, non-contact power transmission, or Wireless Power Transfer (WPT), is a technology that has recently gained attention as a method for supplying power to wireless terminals of IoT devices using advanced technology. Our wireless power transfer utilizes a magnetic resonance method, which features long transmission distances and high efficiency. To actually perform power transmission, it is necessary to combine various technologies in addition to antenna design, so we will propose solutions tailored to our customers' needs, starting with contract design. 【Features】 ■ Design of suitable coils tailored to application devices ■ Maximization of transmission efficiency at the desired transmission distance ■ Evaluation of transmission efficiency and output power of the wireless power transfer section ■ Adjustment of magnetic resonance to enhance transmission efficiency *For more details, please refer to the PDF materials or feel free to contact us.

• power supply
• Power Supplies
• Other contract services

For wireless power transfer design outsourcing, go to WTI!

This technology enables wireless power supply for electronic devices, allowing for high-efficiency power transmission even over long distances. The electromagnetic induction method commonly used for wireless power transmission typically has a transmission distance of about 1 cm. However, our magnetic resonance method allows for power transmission over distances of several tens of centimeters. Additionally, our unique coil design based on our patented technology enables more efficient power transmission and provides a wide range of compatibility for highly customizable wireless power devices. 【Service Overview】 ■ Contract design service for wireless power supply coils ■ Contract evaluation service for magnetic resonance wireless power transmission *For more details, please download the PDF or feel free to contact us.

• Other contract services

As the new year begins, I would like to extend my heartfelt congratulations on your continued prosperity. I sincerely appreciate your exceptional support throughout the year. This is the STJ Group (Santelecom Japan, STJ Rentec). Now, I am pleased to announce that we will be opening our "Transceiver & Smartphone Rental Shop" simultaneously at three locations nationwide on January 26 (Monday)! ■ List of Services to be Offered - Same-day pickup/return of rental equipment - Usage explanations and demonstrations of rental equipment - Wireless solutions consultation desk - Mobile BPO service counter As a special promotion to celebrate the opening of the rental shop, we are currently running a special price campaign for picking up rental equipment at the shop! For more details, please contact us!

【Notice of Year-End and New Year Holidays】 Thank you very much for your continued support. Our company will be closed for the year-end and New Year holidays as follows: Holiday Period: Saturday, December 27, 2025 – Sunday, January 4, 2026 Please note that inquiries and orders received during the holiday period will be addressed sequentially starting from Monday, January 5, 2026. We apologize for any inconvenience this may cause and appreciate your understanding.

We would like to inform you about our participation in the IT Trend EXPO 2026 Spring. 《Exhibition Information》 With the concept of "New encounters will change tomorrow's work," one of the largest online exhibitions in the industry will be held. NTT TechnoCross will exhibit in the Human Resources Comprehensive category. We have prepared numerous discussions and sessions featuring special guests who are active on television, allowing even those who are usually busy to efficiently gather information on products and services related to IT and DX. Additionally, the first 10,000 participants will receive a 500 yen Amazon gift card. Please apply early. 《Exhibition Overview》 March 3 (Tuesday) to March 7 (Saturday), 2026, online (free: pre-registration required) 《Participation Application》 https://it.expo.it-trend.jp/key/opl7kgdj *Please apply (free) from the "Receive Ticket / Proceed to Participation Registration" link at the above URL.

The TV commercial "What Will You Do in the New Era?" featuring model and actress Akane Horita will begin airing on December 26, 2025. This work expresses the desire of Tokei Densan to respond to the diverse needs of various industries in today's society, where new technologies, such as the expansion of the AI market, are competing with each other, and to nurture and blossom our customers' futures. Please pay attention to Akane Horita, who is dressed in stylish outfits, listening to the concerns of the target audience and offering support. # CM Overview Title: "What Will You Do in the New Era?" (30 seconds / 15 seconds) CM URLs 30 seconds: https://youtu.be/y_lMs0HRj3w 15 seconds: https://youtu.be/egpzMfh8Kok

Thank you very much for your continued support. We would like to inform you that our company will be closed for the year-end and New Year holidays as follows: Year-end and New Year holiday period: December 27, 2025 (Saturday) to January 4, 2026 (Sunday) We apologize for any inconvenience this may cause and appreciate your understanding. *Please note that inquiries made through our website will also be responded to after January 5, 2026 (Monday).