大井電気 List of Products and Services

The "OiNET-923/928B" is a 920MHz long-range wireless communication unit that achieves more than double the communication distance of typical sub-gigahertz (920MHz) radios. By adopting the LoRa method, it enables long-distance communication without the need for relay devices. It is a specific low-power radio station compliant with ARIB STD-T108. Additionally, it supports GFSK modulation, allowing it to handle both high-speed and long-distance communication with a single unit. 【Features】 ■ Communication speed can be changed by adjusting the spreading factor ■ Increasing the spreading factor while decreasing the communication speed improves sensitivity (minimum receiving sensitivity: -132dBm, communication speed: 293bps) ■ Compliant with ARIB STD-T108, it is a specific low-power radio that does not require a license ◎ For more details, please refer to the PDF document or feel free to contact us.

The "Wireless Communication Equipment Catalog" features products made with advanced technology centered around traditional core technologies such as pager technology, which broadly supports new wireless businesses. Starting with the "Patient Call System" that uses LPWA technology, you can choose devices tailored to your needs. [Contents] ■ LoRa Devices ■ LoRaWAN Gateways ■ LoRaWAN Devices *For more details, please refer to the PDF document or feel free to contact us.

The "OiNET-929" is a LoRaWAN end device equipped with an RS-232C serial interface. It can collect various sensor data output via RS-232C using LoRaWAN. Additionally, it has a function for segmented data transmission, allowing for the transmission of relatively large data. 【Features】 ■ Compliant with LoRaWAN specifications (Class A/B/C) ■ Capable of sending any data from the serial interface using LoRaWAN ■ Can transmit data in segments *For more details about the product, please feel free to contact us. *You can download other Oi Electric product catalogs from the link below.

The 『OiNET-938』 is a wireless unit compliant with LoRaWAN specifications, equipped with analog input and contact input/output. It enables data collection from sensors with analog output and monitoring and control of sensors with contact input/output via LoRaWAN. Additionally, it features a low power consumption design considering battery operation. 【Features】 ■ Compliant with LoRaWAN (Class A/B/C) ■ Standard 4-port analog input (sensor ports can be expanded with expansion boards for contact input/output, etc.) ■ Wide power input range: DC5V to +24V ■ No programming required (operates with configuration via commands only) *For more details about the product, please feel free to contact us. *You can download other Oi Electric product catalogs from the link below.

The "OiNET-937" complies with LoRaWAN specifications and facilitates easy access to the internet by implementing standard WAN-side interfaces (Ethernet, 4G/LTE). With an aluminum die-cast housing designed for waterproof and weather-resistant properties, it meets the protection rating of IP65, allowing for installation on outdoor poles, roofs, and more. 【Features】 ■ Complies with LoRa and LoRaWAN specifications (Class A/B/C, GPS time synchronization, ADR) ■ Supports simultaneous reception on up to 16 channels*1 (200kHz bandwidth) *1: Future feature ■ Standard equipped with Ethernet and 4G/LTE modules as WAN-side interfaces (Cat.4 compliant) ■ Complies with waterproof and drip-proof standards suitable for outdoor installation (IPX65) *For more details about the product, please feel free to contact us. *Additionally, you can download other Oi Electric product catalogs from the link below.

The Oi Electric long-distance wireless communication unit adopts the LoRa method. It achieves long-distance communication and excellent noise resistance, making it suitable as a solution for IoT (Internet of Things). Since it does not require visual monitoring, there is no need to go to the site, which helps prevent secondary disasters for staff. It is ideal for monitoring rivers, water levels, mountain activities, and remote monitoring of sluice gates and iron doors. 【Features】 ◆ Ensures a communication distance of approximately 7-8 km in line of sight ◆ Excellent noise resistance characteristics ◆ Achieves low cost with low power consumption *For more details, please contact us or download the PDF for more information.

The "OiNET-929B" is a LoRaWAN end device compliant with LoRaWAN specifications, equipped with an RS-232C serial interface. It is capable of collecting data from various sensors output via RS-232C using LoRaWAN. Additionally, it implements a function to split and transmit data into sizes that can be sent per SF, allowing for the transmission of data that cannot be sent all at once via LoRaWAN. 【Features】 ■ Compliant with LoRaWAN specifications (Class A/C) ■ Capable of sending arbitrary data via LoRaWAN from the serial interface ■ Can split and transmit data into sizes that can be sent per SF ■ No programming required (operates with configuration via commands only) ■ Compatible with LoRaSPN (Small Private Network) *For more details, please refer to the PDF document or feel free to contact us.

The "OiNET-937B" complies with the LoRaWAN specification and facilitates access to the internet by implementing two types of WAN-side interfaces (Ethernet, 4G/LTE). With an aluminum die-cast housing designed for waterproof and weather-resistant properties, it meets the protection rating of IP65, making it suitable for installation outdoors, such as on poles. 【Features】 ■ Complies with LoRaWAN specifications (Class A/B/C, GPS time synchronization, SF, ADR) ■ Standard equipped with Ethernet and 4G/LTE modules as WAN-side interfaces (supports Cat.4) ■ Complies with waterproof and drip-proof standards suitable for outdoor installation (IP65) ■ Up to 16 channels, supporting simultaneous reception (200kHz bandwidth) *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce our proposed "LoRaSPN Construction Solution." By using the "LoRaSPN Gateway and End Devices (Standard Set)," it is possible to provide IoT solutions through a small private network. By selecting LoRaWAN end devices that match the interfaces of connected devices and sensors, you can quickly build and operate a private LoRa system. In addition, we also propose a "Standalone Environmental Monitoring System (LoRa Device with Relay Function)." 【Features】 ■ A Small Private Network can be constructed with a single LoRaSPN Gateway. ■ The wireless section (between the gateway and end devices) complies with LoRaWAN specifications. ■ It can connect to LoRaWAN end devices equipped with various interfaces manufactured by our company. ■ Two types of upper lines, LTE and Ethernet, can be used. ■ The interface between the LoRaSPN Gateway and the application server adopts HTTP. *For more details, please refer to the PDF document or feel free to contact us.

The "OiNET-971" is a system that enables safe passage of maintenance vehicles through level crossings without short-circuit running. By wirelessly transmitting control information from a handheld level crossing control device (onboard unit), it controls the level crossing control device (fixed unit) to open and close the barriers. The wireless method between the fixed unit of the level crossing control device and the onboard unit uses the 920MHz band specific low-power radio. 【Features】 ■ 920MHz band specific low-power radio specification ARIB STD-T108 ■ No registration or license required for the radio station ■ The fixed unit can be installed in the jack panel inside the level crossing equipment box ■ The onboard unit is handheld, waterproof, and can operate on dry batteries *For more details, please refer to the PDF document or feel free to contact us.

The "OiNET-970" is a system that enables maintenance vehicles to safely pass through level crossings without short-circuiting. When a maintenance vehicle passes through a level crossing, the opening and closing of the barriers are controlled by operating a handheld level crossing control device (onboard unit). The wireless communication between the fixed station of the level crossing control device and the onboard unit uses the 920MHz band specific low-power radio. 【Features】 ■ The fixed station can be installed in the jack panel inside the level crossing equipment box. ■ The onboard unit is handheld, waterproof, and can operate on dry batteries. ■ 920MHz band specific low-power radio specification ARIB STD-T108 does not require a radio license application. ★ We will be exhibiting at the Railway Technology Exhibition 2019. For details, please refer to the basic information section. * For more information, please refer to the PDF materials or feel free to contact us.

The "OiNET-940/941/942/711" is an on-site wireless calling system that uses the 920MHz band LPWA method, featuring a display screen with an easy-to-read color LCD. Compared to wireless LAN systems, it can establish calling areas with fewer antennas. It can also cover outdoor areas such as parking lots within the premises. Additionally, the protection rating for the calling card is IPX2 (drip-proof type II). 【Features】 ■ Uses the 920MHz band ■ Unlike wireless LAN systems, it has less interference and allows for stable communication ■ Can establish calling areas with fewer antennas compared to wireless LAN systems ■ Can cover outdoor areas such as parking lots within the premises ■ Features a display screen with an easy-to-read color LCD *For more details, please refer to the PDF document or feel free to contact us.

The "OiNET-937E" is a portable waterproof housing that implements a LoRaWAN gateway (or a LoRaSPN gateway can be selected), along with a rechargeable battery, charger, and AC-DC power supply, making it possible to have a mobile LoRa solution with just this one unit. Additionally, it can operate continuously for 10 hours in locations where power supply is not available due to its battery operation. 【Features】 ■ The LoRa gateway can be selected from LoRaWAN compliant or private LoRa (SPN) ■ LTE module is standardly implemented ■ Allows server access via the internet and remote maintenance ■ Operates continuously for 10 hours in locations without power supply due to battery operation ■ Built-in battery charger allows for charging anywhere after a day's work *For more details, please refer to the PDF document or feel free to contact us.

In this document, we introduce our "LPWA Solutions." At Oi Electric, we offer products that utilize LPWA technologies, specifically LoRaWAN and LTE-M, which are used in IoT applications. All our products are developed in-house and manufactured domestically, and we are one of the few domestic manufacturers of LoRaWAN gateways. LPWA enables low-power, long-range communication and can be used at a low cost, which has led to the widespread adoption of our LPWA products in remote monitoring and control of infrastructure facilities. 【Case Studies】 ■ Volcano Monitoring System ■ Offshore Buoy Monitoring System ■ Sluice Gate Monitoring and Control System ■ River Monitoring System ■ Land Lock Monitoring System ■ Gas/Water Meter Reading System ■ Small LoRa Gateway/LoRa Repeater (under development) ■ Portable LoRa Gateway *For more details, please refer to the PDF document or feel free to contact us.

At Oi Electric, we offer a wide range of LoRaWAN-compatible devices tailored to meet our customers' needs. We can accommodate a variety of interfaces to match the sensors and devices being connected. 【Usage Examples】 - Infrastructure monitoring and sensing (e.g., gate opening/closing and fault detection) - Environmental monitoring for commercial facilities and high-rise buildings (e.g., digitizing temperature information and power consumption data) - Monitoring systems for public security and disaster prevention (e.g., door opening/closing detection, river water level and rainfall monitoring) *For more details, please refer to the related catalog or feel free to contact us.

"OiNET-987-C1" is a wired LCX integrity verification system. The digital train radio system is used for communication between the command center and crew to ensure stable transportation, and in areas with poor radio reception, such as inside tunnels, communication is conducted using LCX (leaky coaxial cable). This system can be added without changing the settings of the existing digital train radio system and allows for regular remote monitoring of the integrity of the LCX. 【Features】 ■ Detects abnormalities in the LCX (leaky coaxial cable) used in the digital train radio ■ When the electric field strength of the LCX measured by the measurement antenna decreases, a contact output is sent from the transmitter ■ Operates for over 5 years on an internal lithium battery ■ Can be switched between conventional lines and Shinkansen using a toggle switch *For more details, please refer to the PDF document or feel free to contact us.

"OiNET-987-W1/OiNET-988" is a wireless LCX integrity verification system. It is applicable in situations where there is a distance to the terminal block when connecting the contact information cable, or where crossing tracks is necessary. "OiNET-987-W1" is the transmitter, and "OiNET-988" is the receiver. 【Features】 ■ Detects abnormalities in LCX (leaky coaxial cable) used in digital train radio ■ When the electric field strength of the LCX measured by the measuring antenna decreases, it outputs a contact signal from the transmitter ■ Can switch between conventional and Shinkansen lines using a toggle switch *For more details, please refer to the PDF document or feel free to contact us.

The Oi Electric's LoRaWAN gateway implements Semtech's "Basic Station" software, enabling the rapid construction of a LoRaWAN network by supporting Amazon Web Services' "AWS IoT Core for LoRaWAN." This content will be exhibited at the IoT & 5G Solutions Expo [Spring] held from April 24. We sincerely look forward to your visit. 【Exhibition Overview】 Date: April 24 (Wednesday) to 26 (Friday), 2024 Time: 10:00 AM to 6:00 PM (ends at 5:00 PM on the last day) Location: Tokyo Big Sight

Ohi Electric Co., Ltd. is a company that has been active in a variety of fields, from infrastructure support to everyday life assistance, leveraging the strength gained through a continuous accumulation of technology and creativity since its founding. Our consistent development system, from software development to hardware development and further to product maintenance and system proposals at our domestic production facilities, guarantees our technical capabilities and reliability. We offer high-level technology that enhances customer brands, including "transmission equipment" and a wide range of support for our new wireless business with "wireless communication equipment." [Product Lineup] ■ Transmission Equipment ■ Monitoring and Control Equipment ■ Wireless Communication Equipment ■ Electronic Measurement Equipment *For more details, please download the PDF or feel free to contact us.