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  3. 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)
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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)

EstablishmentSeptember 21, 1989
capital12000Ten thousand
number of employees70
addressTokyo/Minato-ku/2-2-6 Kaigan, DS Kaigan Building 7F, 8F
phone0120-984-875
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last updated:Aug 06, 2025
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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) List of Products and Services

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IP radio rental (nationwide) IP radio rental (nationwide)
Digital simple radio rental (1 to 5 km) Digital simple radio rental (1 to 5 km)
Income rental (50-300m) Income rental (50-300m)
Explosion-proof radio rental Explosion-proof radio rental
IP radio IP radio
Digital simple business radio Digital simple business radio
Specific low-power transceiver Specific low-power transceiver
Explosion-proof radio Explosion-proof radio
Corporate mobile phones, corporate smartphone-related products and services, etc. Corporate mobile phones, corporate smartphone-related products and services, etc.
Solution service products Solution service products
Examples of Utilizing Radios, Transceivers, and Intercoms Examples of Utilizing Radios, Transceivers, and Intercoms
Useful information about radios, transceivers, and intercoms. Useful information about radios, transceivers, and intercoms.
Explosion-proof

Explosion-proof radio

The intrinsically safe explosion-proof wireless device is designed with a special structure to ensure that it does not become an ignition source for fires or explosions, even when flammable gases, vapors, or dust are released into the atmosphere. It has passed explosion-proof standard inspections by certification bodies and has received certification. It is commonly used in various factories, complexes, and chemical plants.

Explosion-proof UHF digital radio / Licensed station 'NX-330EX CT'

- The first intrinsically safe explosion-proof structure 3B digital simple radio license station in Japan. - Equipped with a user code function with 511 combinations to prevent call interference.

The "NX-330EX CT" is a UHF band digital simple radio that complies with IECEx/ATEX standards. It allows for clear digital voice communication and is equipped with advanced digital secret code functions with 32,767 combinations, as well as selective calling features for individual, group, and all calls. Additionally, it supports location management via a GPS receiver. Please feel free to contact us if you need assistance. 【Features】 ■ Authorized UHF band 65 channels, transmission output 1.2W ■ Clear digital voice communication ■ 511 user code functions to prevent call interference ■ Advanced digital secret code functions with 32,767 combinations ■ Selective calling features for individual, group, and all calls ■ Emergency features (emergency button, motion sensor, lone worker support) *For more details, please refer to the PDF document or feel free to contact us.

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Explosion-proof VHF general-purpose radio/License-free station 'NX-230EX FT'

Intrinsic safety explosion-proof structure! Equipped with individual, group, and simultaneous selection call functions.

The "NX-230EX FT" is a VHF general-purpose radio with a dustproof and waterproof structure rated IP65/67. It supports clear voice digital communication and is equipped with an advanced digital secret code function with 32,767 combinations. Additionally, we also have the UHF general-purpose radio "NX-330EX FT." Please feel free to contact us if you have any requests. 【Features】 ■ Intrinsically safe explosion-proof structure ■ Digital/analog mode general-purpose radio ■ Rugged design compliant with MIL-STD (U.S. Department of Defense military standards) ■ Dustproof and waterproof structure IP65/67 ■ ARIB STD-T102 supports clear voice digital communication *For more details, please refer to the PDF materials or feel free to contact us.

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[Explosion-proof Rental] Intrinsically Safe Explosion-proof Structure - Portable Radio NX-330EX

Get 10% off rental fees with 'Iprosu Seen'!! Introducing products that comply with IECE x/ATEX standards featuring intrinsically safe explosion-proof construction!

"Get 10% off rental fees with 'Iprosu Seen'!!" We would like to introduce the simple business-use wireless 'JVCKENWOOD NX-330EX' that we handle. It features intrinsically safe explosion-proof construction, compliant with Ex ib IIC T4 Gb (gas), Ex ib IIIC T110℃ Db (dust), and IECE x/ATEX standards. The frequency range is UHF (467–467.4MHz), and it requires a license application in advance. Please feel free to contact us if you have any requests. 【Specifications (partial)】 ■ Model name: NX-330EX CT ■ Output: 1.2W, communication distance (approximate: line of sight about 0.8–1.8Km) ■ Number of channels: 65ch ■ Operating temperature range: -20℃ to +50℃ ■ Dimensions (mm): Width 58 × Height 137.9 × Depth 39.8 (excluding protrusions when KNB 70LEX is attached) *For more details, please refer to the PDF document or feel free to contact us.

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Explosion-proof solution

We offer intrinsically safe explosion-proof radios for sale and rental that can be used safely in hazardous locations.

An intrinsically safe explosion-proof radio is a special type of radio that does not cause ignition from sparks or high temperatures, even in environments with explosion hazards such as chemical plants and oil refineries. This safety feature is ensured not only during normal operation but also in the event of a malfunction, and the robust construction allows for safe use in harsh environments. Santec Telecom Japan Co., Ltd. offers flexible solutions for both sales and rentals. 【Features】 - Excellent waterproofing and durability, suitable for use in various hazardous locations - Equipped with a large-capacity battery, allowing for over 10 hours of continuous use - Lightweight and compact design, minimizing interference during movement and work For more details, please contact us or download the catalog.

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