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SJIT Manuals & User Guides

SJIT (Seongji) is a specialized South Korean manufacturer of advanced wireless communication modules, including LoRa, Sigfox, Wi-Fi HaLow, and asset tracking devices.

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SJIT Product Manuals

SJIT Co., Ltd., also known as Seongji, is an innovative hardware designer and manufacturer based in South Korea, specializing in advanced wireless communication modules. Their product lineup includes compact, high-performance solutions for various IoT applications, featuring connectivity technologies such as LoRa, Sigfox, Wi-Fi HaLow, and Bluetooth Low Energy (BLE). These modules are widely utilized in sophisticated asset tracking, wireless audio transceivers, and smart digital electronics integration.

Partnering closely with global electronics leaders, SJIT engineers devices that operate seamlessly across multiple international frequency bands. The company is known for providing robust, easy-to-integrate, and ultra-low-power radio components that empower Original Equipment Manufacturers (OEMs) to quickly develop compliant, connected consumer and industrial technologies.

SJIT manuals

Latest manuals from manuals+ curated for this brand.

SJIT WHM320A Wi-Fi Halow Module User Manual

September 16, 2025
SJIT WHM320A Wi-Fi Halow Module Introduction The WHM320A uses the new Wi-Fi standard IEEE 802.11ah, which uses the Sub 1 GHz license-exempt band. It has long range, low power and…

SJIT WHM200A WIFI Halow Module User Manual

June 17, 2025
User manual of WHM200A Introduction The WHM200A uses the new Wi-Fi standard IEEE 802.11ah, which uses the Sub 1 GHz licenseexempt band. It has long range, low power and high…

SJIT ATM610 Audio Transceiver User Manual

February 28, 2025
SJIT ATM610 Audio Transceiver General Specification The ATM610 functions as either the transmitter (arbiter) or receiver (client) for advanced 2.4 GHz wireless audio applications. It creates simple or sophisticated wireless…

SJIT IET10N Asset Tracker User Manual

February 18, 2025
Asset Tracker IET10N User Manual IET10N Asset Tracker Revision History Date Rev. Editor Description 2024-01-30 1.0 SW Moon First release 2024-06-26 1.1 KD Kim Added FCC requirements. — p14 Sigfox…

SJIT SRM200A Sigfox Module User Manual

October 5, 2024
SRM200A Sigfox Module User Manual of SRM200A 1. Introduction The SRM200A is a quad mode module supporting Sigfox, BLE, WiFi and GPS. This Module able to transmit and receive messages…

SJIT SFM20R4 Quad Mode Module User Manual

September 23, 2024
SJIT SFM20R4 Quad Mode Module Product Information Specifications Module: SFM20R4 Modes: Sigfox, BLE, WiFi, GPS Main Chipset Information: SigFox: ON Semiconductor AX-SFUS-1-01 BLE: Nordic Semiconductor nRF52832 WiFi: ESPRESSIF ESP8285 GPS(GLONASS):…

SJIT SFM11R2D SIGFOX Module User Manual

September 14, 2024
SJIT SFM11R2D SIGFOX Module USER MANUAL 1. Introduction The module is a SIGFOX only module able to transmit and receive messages using the SIGFOX network. The Sigfox chipset is from…

SJIT SFM10R4 Circuit User Manual

September 9, 2024
SFM10R4 Circuit Specifications Main Chipset Information: Sigfox from ON semiconductor, Part Number AX-SFUS-1-01 Output Power: 22.0~24.0dBm at 920.8MHz Frequency: 920.8MHz Power Setting: 24 Operating Temperature: -30 to +85 degrees Celsius…

SJIT ATM210 Wireless Audio Transceiver User Manual

May 7, 2024
USER MANUAL ATM211 Wireless Audio Transceiver, 5GHz 26.0x40.4x3.2[mm], 24pin FFC Version: 02 User Manual General Specification The ATM211 is 5GHz wireless audio transceiver module that optimized for building point to…

LSM110A LoRa Module User Manual - SJIT

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User manual for the SJIT LSM110A, a compact, low-power, bidirectional radio module utilizing Semtech's LoRa™ modulation technology for the 902-928 MHz ISM band. Features include ultra-long range, high interference immunity,…

WHM200A User Manual: IEEE 802.11ah Wi-Fi Module

user manual
This user manual provides detailed information on the WHM200A, a long-range, low-power IEEE 802.11ah Wi-Fi module optimized for IoT applications. It covers hardware architecture, operational description, features, antenna design, installation,…

WHM320A Wi-Fi HaLow Module User Manual - SJIT

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User manual for the SJIT WHM320A, a Wi-Fi HaLow (IEEE 802.11ah) module designed for long-range, low-power IoT applications operating in the Sub 1 GHz band. Details hardware, features, specifications, and…

SJIT support FAQ

Common questions about manuals, registration, and support for this brand.

  • Where is SJIT based?

    SJIT (Seongji) is headquartered at 54-11, Dongtan Hana 1-gil, Hwaseong-si, Gyeonggi-do, South Korea.

  • What types of connectivity components does SJIT manufacture?

    SJIT manufactures a range of advanced communication modules supporting long-range and short-range wireless protocols, including LoRa, Sigfox, Wi-Fi HaLow, Bluetooth Low Energy (BLE), and GNSS asset tracking capabilities.

  • Can I install an SJIT tracking device on a metal surface?

    For optimal wireless data performance, it is generally advised to avoid installing Tracker modules directly on or closely surrounded by metal plates, as this can severely degrade RF signal quality.

  • How do I contact SJIT for technical integration support?

    You can contact SJIT technical and module integration support via email at Iotsupport@seongji.co.kr or by phone at +82-31-222-8194.