STJグループ（株式会社サンテレコムジャパン、株式会社STJレンテック） Official site

IP radio rental (nationwide)

Digital simple radio rental (1 to 5 km)

Income rental (50-300m)

Explosion-proof radio rental

IP radio

Digital simple business radio

Specific low-power transceiver

Explosion-proof radio

Corporate mobile phones, corporate smartphone-related products and services, etc.

Solution service products

Examples of Utilizing Radios, Transceivers, and Intercoms

Useful information about radios, transceivers, and intercoms.