What Sensortech does

Sensortech (센서텍 주식회사) is a privately-held South Korean ultrasonic sensor manufacturer founded in 2001, operating from its Incheon headquarters and factory, an R&D center in Seoul (Magok), and wholly-owned manufacturing subsidiaries in Weihai, China and Pune, India. The company's technology stack spans the full ultrasonic value chain — from metal-housed sealed transducer elements and open-type elements operating at 40kHz-87kHz frequencies (with detection ranges up to 8m), through to complete vehicle modules including Parking Assistance Systems (PAS), Autonomous Parking Systems (APS), Blind Spot Detection (BSD), aftermarket parking kits, and specialty safety modules for buses, trucks, and heavy equipment. Industrial applications include compact 10mm/1g modules for home robots and liquid-level interface sensors for process control, and the company has introduced a Long Range Distance Sensor / Radar Sensor targeting ADAS and autonomous driving markets.

The business model is B2B hardware sales: Sensortech sells directly to OEMs and industrial customers through a quote-based purchase inquiry system on its multilingual corporate website (Korean, English, Chinese), with no publicly disclosed pricing and a small number of SKUs also listed on DeviceMart.co.kr for aftermarket. Revenue streams are split across ultrasonic transducer elements, complete sensor modules, parking guidance systems, and supporting driver circuits. Named enterprise customers include Hyundai/Kia (implied via aftermarket sensor matching), and Doosan Infracore for excavator proximity sensing; automotive, commercial vehicles, and heavy equipment are the primary segments, with robotics and industrial process control as secondary verticals.

The company is IATF16949 certified across all three manufacturing sites (Korea, China, India), with additional product certifications (CE, E-Mark, FCC, KC, AIS, ISO14001, SQ) enabling global market access. Corporate actions including a 2021 stock split, 2024 free share issuance, 2024 electronic securities conversion, and the 2025 24th Annual General Meeting indicate a structured ownership model typical of established Korean SMEs. The company has been recognized by Korean authorities as a "Strong Enterprise 100" in the materials/components/equipment category and as an "Innovation Enterprise National Representative 1000."

Name

Sensortech

Legal name

센서텍 주식회사

Website

https://st4u.com

Company type

Private

Founded year

2001

Operating status

Operating

Short description

Sensortech (센서텍) is a South Korean manufacturer of ultrasonic sensors and complete modules for automotive, commercial vehicle, heavy equipment, robotics, and industrial applications, with manufacturing facilities in Korea, China, and India.

Ownership category

akta.pro rank

Product category

Ultrasonic Sensors

NAICS

Motor Vehicle Electrical and Electronic Equipment Manufacturing (336320), Other Measuring and Controlling Device Manufacturing (334519), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451)

SIC

Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Active Safety Sensing Hardware Manufacturing (Radar/LiDAR/Cameras/Ultrasonic) (IMACAMAF)

akta.pro secondary industries

Automotive Sensors Manufacturing (Position/Pressure/Temp/IMU/Radar/LiDAR Cameras) (IMACAJAD), Industrial-Grade Sensors & Transducer Components (Discrete sensing elements, transducers, MEMS sensors) (IMAGAJAO)

Keywords

• Ultrasonic sensors
• Parking assistance systems
• Blind spot detection
• Automotive proximity sensors
• Industrial sensor modules

Headquarters

HQ city

Seoul

HQ country

South Korea

HQ region

Asia

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Ultrasonic Sensor Element Sales: Sale of ultrasonic sensor transducer elements including closed-type, open-type, and interface sensors. These are fundamental components sold to manufacturers for integration into end products.
2. Ultrasonic Sensor Modules: Sale of complete ultrasonic sensor modules including vehicle parking assistance systems (PAS), autonomous parking systems (APS), blind spot detection (BSD), commercial vehicle sensors, and industrial sensors.
3. Parking Guidance Systems: Sale of complete parking guidance systems including sensor modules and controllers for parking lot management applications.
4. Sensor Drive Circuit Components: Sale of sensor drive circuit components and parts required for operating ultrasonic sensors.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Sensortech develops and manufactures ultrasonic sensor transducer elements (sealed, open-type, and interface/liquid level sensors) and complete ultrasonic sensor modules for automotive parking assistance (PAS), autonomous parking (APS), blind spot detection (BSD), aftermarket parking systems, commercial vehicle (bus/truck) safety, heavy equipment proximity detection, industrial automation, and parking guidance systems. The company also supplies sensor driver circuit components, operating its own R&D center in Seoul and manufacturing facilities in Incheon, Weihai (China), and Pune (India).

Product overview

Sensortech is an ultrasonic sensor technology company that develops and manufactures a comprehensive portfolio of ultrasonic sensing solutions across three main product lines: (1) Ultrasonic Sensor Transducer Elements - sealed, open-type, and interface liquid level sensors serving automotive, parking, intrusion detection, automatic doors, distance measurement, and liquid level measurement applications; (2) Complete Ultrasonic Sensor Modules - vehicle systems including PAS (Parking Assistance), APS (Autonomous Parking), BSD (Blind Spot Detection), aftermarket parking, bus safety, truck, and heavy equipment sensors; plus industrial sealed and open-type modules and parking guidance systems; (3) Supporting Components including sensor driver circuits. The company operates globally with headquarters in Incheon, South Korea, R&D center in Seoul, and manufacturing facilities in China and India, serving diverse sectors including automotive, robotics, commercial vehicles, and industrial automation.

Differentiator

Problem solved

Functional benefit

Products and services

• Sealed Ultrasonic Sensor Elements (밀폐형 초음파 센서 소자) Metal-housed sealed ultrasonic transducer elements with enhanced durability against external impact, wide operating temperature range, and waterproof/dustproof construction for reliable operation in harsh, high-humidity, or cold environments. Available in various colors and frequencies for automotive, parking, intrusion detection, automatic doors, and industrial applications.
• Open Ultrasonic Sensor Elements (개방형 초음파 센서 소자) Open-type ultrasonic transducer elements with excellent sensitivity enabling low voltage (5V) drive, high operational reliability, extended detection range up to 8m, and compact 10mm size optimized for home robot and compact product applications.
• Interface Sensors for Liquid Level Measurement (계면 센서) Ultrasonic interface sensors for liquid level measurement in chemical process control, sludge level detection in sewage/water treatment plants, and liquid automatic control. Applied frequencies range from 100kHz to 3MHz in transmitter-receiver separated configurations.
• Vehicle Parking Assistance System Sensor - PAS (차량용 주차지원 초음파 센서) Parking assistance sensors that measure distance between vehicles and obstacles, providing visual and auditory warnings to drivers. Features LIN 2.0/2.1 communication and dedicated ASIC for integrated amplification and computation, enabling standalone operation without a separate PAS ECU.
• Autonomous Parking System Sensor - APS (차량용 자동주차 초음파 센서) Multi-sensor system for autonomous parking that detects empty parking spaces using front, side, and rear ultrasonic sensors, automatically steering to increase parking ease. Combines with AVM camera systems for reliable APS solutions and supports Cross Traffic Alert (CTA) functionality.
• Blind Spot Detection Sensor - BSD (차량용 사각감지 초음파 센서) Blind spot detection sensors that detect vehicles in blind spots and warn drivers during parking or lane changes with visual, auditory, and tactile alerts. Operates autonomously without BCM or ECU control, with automatic detection pause during reverse to prevent ultrasonic interference.
• Aftermarket Parking Assist System (자동차 애프터마켓 주차지원 시스템) Aftermarket parking support systems using the same sensors as Hyundai/Kia original equipment, with superior low-temperature characteristics for reliable operation in cold regions. Features LED display with sound alarms proportional to obstacle distance.
• Bus Ultrasonic Safety Sensors (버스용 초음파 안전 센서) Integrated bus door safety system using ultrasonic sensors for door area object detection, rear parking assistance, and passenger detection for door open/close control. Includes integrated safety controller with multi-stage warning levels based on detection distance.
• Truck Ultrasonic Sensors (트럭용 초음파 센서) Truck ultrasonic sensors for driver blind spot detection and alarm, front detection for passenger side, side detection during road driving up to 6m, and rear detection with accelerator interlock during starting and reverse.
• Heavy Equipment Ultrasonic Sensors (중장비용 초음파 센서) Ultrasonic sensors designed for large vehicles with detection range suitable for construction equipment, reliable operation in harsh construction site environments, and flexible product design for various applications. Accompanied by ECU modules with multi-alarm outputs.
• Industrial Sealed Ultrasonic Sensor Modules (산업용 밀폐형 초음파 센서 모듈) Compact, easy-to-install sealed industrial ultrasonic sensor modules with waterproof structure suitable for outdoor use, strong resistance to dust and moisture contamination, and wide operating temperature range (-40°C to +85°C). Applications include object detection, intrusion alarms, automatic doors, distance measurement, proximity switches, and guide robots.
• Industrial Open Ultrasonic Sensor Modules (산업용 개방형 초음파 센서 모듈) Open-type industrial ultrasonic sensor modules with excellent sensitivity enabling low voltage (5V) drive, high operational reliability, extended detection range up to 8m, and compact 10mm size optimized for home robot products. Available in single, dual, UART TTL Level, and I2C communication variants.
• Parking Guidance System Ultrasonic Sensor Modules and Controllers (주차 유도 시스템 초음파 센서 모듈 및 제어기) Advanced parking guidance system combining ultrasonic sensor modules (PM-100) supporting RS-485 communication with RGB LED indicators and a controller (PM-200) capable of managing up to 155 sensors. Operating voltage 10V-26V with power consumption 0.5W-1.5W per sensor.
• Sensor Driver Circuit Components (센서 구동회로 부품) Driver circuit components for powering and controlling ultrasonic sensors. Available for separate inquiry through the company's purchase request system.

Quantifiable outcome

• Detection range up to 8m for industrial open-type sensors
• +2 more outcomes

Named customers2 records

Segments5 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators3 records

Recent moves9 records

Expansion highlights5 records

Direct peers

• Nicera (Nippon Ceramic / Fuji Ceramics): Japanese specialist in piezoelectric ceramic elements and ultrasonic sensors for distance/object detection, automotive, and industrial applications. Direct technology peer to Sensortech's transducer element business.
• Murata Manufacturing: Japanese global leader in ultrasonic sensors and piezoelectric devices for automotive, industrial, and consumer applications. Direct peer to Sensortech in transducer and module-level ultrasonic sensing for PAS/BSD and industrial proximity detection.
• Audiowell Electronics (Guangzhou): Chinese manufacturer of ultrasonic sensors and transducers for automotive (parking assistance), home appliance, and industrial flow/level measurement. Closest geographic and product-line peer to Sensortech's transducer-to-module vertical.

Emerging players

• Migatron Corp: US-based specialist in ultrasonic sensors for distance measurement, level sensing, and proximity detection. Comparable niche-scale competitor to Sensortech in industrial ultrasonic applications.

Broad incumbents

• Hyundai Mobis: Captive tier-1 supplier to Hyundai Motor Group covering ADAS sensors, modules, and full systems. Direct counterparty pressure on Sensortech's Hyundai/Kia parking sensor and aftermarket business.
• SICK AG: German industrial sensor specialist offering ultrasonic, photoelectric, and LiDAR sensors for factory automation and logistics. Adjacent competitor in industrial ultrasonic modules and parking guidance systems where Sensortech's PM-100 also plays.
• Continental AG (ADAS): Global tier-1 supplier of ultrasonic and radar-based ADAS sensors, with deep OEM relationships across Europe, North America, and Asia. Overlaps with Sensortech on PAS/BSD ultrasonic modules and competes at higher-ASP radar/LiDAR segments Sensortech is moving into.
• Denso Corporation: Japanese tier-1 automotive supplier with significant ultrasonic and millimeter-wave sensor production. Comparable to Sensortech in supplying Toyota-group and broader Asian OEMs with parking/BSD sensing hardware.
• Pepperl+Fuchs: German industrial sensor manufacturer with a strong ultrasonic proximity and level-sensing portfolio for factory automation and process control. Overlaps with Sensortech's industrial open/sealed module lines.
• Robert Bosch (Automotive Electronics): Tier-1 automotive supplier offering ultrasonic parking sensors as part of a broad ADAS and chassis electronics portfolio. Competes with Sensortech at global OEMs on platform-fit parking sensor business.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries2 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sensortech