ENERGY HARVESTING · SELF-POWERED WIRELESS SENSORS

No batteries, no wiring —
wireless safety solutions

The force of a press, an opening or a rise in temperature generates the electricity they need to send a signal.

MPIA Co., Ltd., a specialist in energy-harvesting self-powered sensors.

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IECExExplosion-proof
FCC 6US certifications
KC 12KC registrations
13Self-powered patents

LIVE DEMO

13

Self-powered patents

11 in Korea · 2 overseas (Japan · US) + 3 PCT
100,000

Operation cycles tested

RF signal verified on every press
IP57

Dust · water protection

8-hour dust · 30-minute immersion tests
1km

Wireless range

Sensor approx. 100 m + repeater extension (open field)
999

Sensors registered

per Signal Monitor
2004

Founded

HQ · factory at Bucheon Techno Park

01IN THE FIELD

In substations, inside switchboards, in hospitals and schools

Photos of MPIA self-powered sensors installed and applied on site. Click a photo to enlarge it.

Field installations12

Full installation on one GIS substation bay

Fire detection sensor inside a distribution board

Emergency bell in a Myongji Hospital operating room

Fire detection sensor on a large distribution board

Myongji Hospital — operating room emergency call system

School receiver number display · beacon light

Fire detection sensor in an outdoor cable tray

Wireless switch at a Hyundai E&C Hillstate apartment in Wirye

02WHY SELF-POWERED

Still putting batteries in your sensors and connecting wiring?

Sensors are where safety, automation and unmanned operation begin, yet the way they are powered has always stood in the way of installation and maintenance.

Conventional sensors (batteries · wiring)

Battery replacement · discharge risk
Batteries must be replaced periodically, and once they run down, no signal comes through.
Wiring · wall construction costs
Running cables means drilling through walls and construction work.
Limited installation locations
They are hard to install in tight spaces with no power access or outdoors.
Spent batteries
Every replacement produces spent batteries.

MPIA self-powered sensors

No Battery
No batteries, so no worries about replacement or discharge.
No Power Input
Attached and installed without changing existing facilities or equipment.
Shorter installation time
With no wiring work, installation time and labor are greatly reduced.
Semi-permanent use
100,000-cycle operation test · IP57 for long service life.

Risks of having no sensors

01No GIS valve monitoring at substations → power outages
02Fires in underground utility tunnels where sensors are hard to install → outages in surrounding areas
03No valve management → waste oil leaks · environmental pollution
04Unchecked fire risk in extra-high-voltage switchgear → major fires

03HOW IT WORKS

Motion becomes electricity, and electricity becomes a signal

When a magnet moves rapidly past a coil, the change in magnetic flux produces an electromotive force (Faraday's law of electromagnetic induction). MPIA has packed this principle into a compact generator module.

STEP 1
Press · open · temperature rise
Kinetic energy: a person presses, a door or valve moves, or rising temperature deforms the SMA
STEP 2
Self-powered generation
Electricity is generated by electromagnetic induction — up to 14 W from a force of 10 N
STEP 3
Wireless transmission
The signal is sent 3 times via 10 mW low-power communication, over 100 m in open field

Self-powered technology

04SAFETY PLATFORMS

Find solutions by on-site problem

The same sensor solves different problems depending on where and how it is connected. MPIA organizes its proposals into 10 platforms.

GIS Substation Power Safety Platform

Dual monitoring of GIS gas valve open/close status via LCD · SCADA

Deployed in 3 phases at KEPCO (Korea Electric Power Corporation) GIS substations 02

Extra-high-voltage Switchgear Power Safety Platform

Busbar 80 ℃ temperature · door · emergency bell on a Signal Monitor

Fire detection specified for switchgear 03

Distribution Panel Power Safety Platform

Fire · emergency monitoring of unmanned substations supplying subway power

86 fire detectors verified on site at Suseo Substation 04

Cable Joint Power Safety Platform

80 ℃ detection at cable joints inside troughs, remote monitoring over 1 km

Pilot deployment in progress at S Transportation Corp. 05

Data Center & ESS Power Safety Platform

Distribution panel fire · door · insulation monitoring via SCADA

Data center · ESS electrical rooms

05PRODUCT LINE-UP

Self-powered sensors and receiving · monitoring devices

Sensors, switches and emergency bells generate their own power, while receivers, Signal Monitors and Sensor Hubs turn their signals into screen displays, beacon lights, PC records and text messages.

M sensor

Self-powered wireless sensors for IoT and smart factories

MWSF-100 Self-powered Fixed-temperature Fire Detection Sensor A fire detection sensor that sends a signal using the heat of rising temperature, with no wiring or batteries Learn more

MWSG-100 Self-powered Valve Open/Close Detection Sensor A power-free sensor added to existing valves that reports open/closed status wirelessly Learn more

MWSD-100 Self-powered Door Open/Close Detection Sensor A power-free door sensor that sends a signal from the force of the door opening and closing Learn more

Self-powered Object Movement Detection Sensor A sensor that sends a signal on its own when fire extinguishers, goods or valuables move Learn more

MWSOP-100 Self-powered Over-pressure Detection Sensor A sensor that sends a signal on its own when pipe pressure exceeds the set value Learn more

M switch

Self-powered wireless switch systems

MWST-120 Self-powered Wireless Switch System A waterproof wireless switch you simply attach, with no wall work or batteries Learn more

M call

Self-powered RF wireless call systems

MWST-110 Self-powered Emergency Bell System An emergency bell that sends a signal from the force of a press, with no battery or wiring Learn more

MTX-100 Guest Pager System A wireless call system that reduces customer waiting in stores Learn more

Monitoring Systems

Receiving, display, PC and SMS for sensor signals

MWSM-700 Signal Monitor System A receiver that takes signals from up to 999 self-powered sensors and shows their numbers and status Learn more

MWSH-300 Sensor Hub · Smart Safety Alert A receiver that sends text alerts on sensor detection and prolonged inactivity with just an internet connection Learn more

Web & PC Monitoring System A monitoring system that shows sensor location, status and history on a map screen Learn more

Eco Products

OEM-manufactured products

ACT-A DPF Fuel Injection Actuator A fuel injector, a key component of DPFs for older diesel vehicles Learn more

ICD-2000 Thermoelectric Dehumidifier / Panel Cooler Electronic dehumidifiers and panel coolers using the Peltier effect of thermoelectric modules Learn more

06FIELD PROOF

Already at work in the field

At substations, unmanned subway substations, logistics centers, schools and hospitals, self-powered sensors are sending real signals.

GIS Substation Power Safety Platform

KEPCO (Korea Electric Power Corporation) GIS substations — valve open/close monitoring expanded in 3 phases

2021.10Busan · Ulsan Headquarters
GIS gas valve open/close detection · LED panel display
2024.09Daegu Headquarters, 1 BAY
On-site LCD monitoring + SCADA integration via RS-485 relay contacts
2026.06Installation completed on all 154 kV sections, Daegu Headquarters
GIS valves 300 · PNL doors 100 · PNL temperature 100, IEC 61850 dedicated monitoring panel

Operating a gas valve on an energized GIS by mistake can break down insulation and lead to a wide-area blackout. Simply attaching a sensor unit to the existing valve shows its open/closed status in real time.

Learn more

86 Distribution panelsFire detection at unmanned subway substations

Fixed-temperature Fire Detection Sensors (verified on site at Suseo Substation)

140 Wireless callRobot call bells at a logistics center

Call bells · 5 relays · 4 receivers (Company C automated logistics center)

33 Emergency bell monitoringEmergency bells at schools · hospitals · public institutions

33 community service centers · Bucheon City Hall · elementary, middle and high schools in Songdo, Incheon · Myongji Hospital operating rooms

View all case studies

07SYSTEM INTEGRATION

Will it connect with the systems on your site?

We connect in four ways, from a simple number display to PC monitoring, mobile text messages and PLC · SCADA control.

The Signal Monitor displays the sensor number and, via RS485, records sensor status (open/closed) and detection history in the PC program. Up to 10 overlapping signals are stored.

Self-powered sensorsEmergency bell · fire · valve · door

100 m

RepeaterMWSR2-900 · Optional

1 km

Signal MonitorMWSM-700

RS485

PC monitoringSensor location · detection history

08CERTIFICATIONS

Technology verified by certifications and patents

From international explosion-proof (IECEx), US FCC, Japan MIC and Korean KC certification to Innovative Product designation, our products meet the standards of the places they are used.

IECEx international explosion-proof
FCC (6 products)
Innovative Product designation (6 products)
KC Conformity Registration (12)
KC Electrical Safety
CE
PSE
Japan MIC
ISO 9001
Venture Company (6th)
Technology-excellent company
Corporate R&D center

IECEx international explosion-proof certification (intrinsic safety)

Innovative Product designation (6 self-powered transmitter/receiver products)

KC Conformity Registration — Fixed-temperature Fire Detection Sensor

KC Conformity Registration — Gas Valve Open/Close Detection Sensor

KC Conformity Registration — Door Open/Close Detection Sensor

ISO 9001 Quality Management System certification

Certifications & patents

09R&D · FACTORY

From design to testing and production, under one roof

Building 203, Bucheon Techno Park 2 — designed and tested at the R&D center in unit 701, produced at the factory in unit 706.

Headquarters · R&D center

100,000-cycle endurance test

IPX7 water immersion test

IP5X dust test

Gas valve open/close sensor simulator

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FAQ

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QWhat is the principle of self-powered generation (energy harvesting)?

Force applied from outside (kinetic energy) is converted into electrical energy. When a button is pressed or a door or valve moves, a magnet moves rapidly past a coil, changing the magnetic flux and generating an electromotive force (Faraday's law of electromagnetic induction). A force of 10 N produces up to 14 W, and that electricity sends a 10 mW low-power signal 3 times.

QWhat is the service life of self-powered sensors, and has their reliability been verified?

With no batteries, they are not bound by battery life. 100,000 operations and RF signal transmission/reception were verified with a durability tester, and IP57 was confirmed by passing dust (IP5X) and water (IPX7) tests per KS C IEC 60529.

QWhat is the wireless range, and do signals get through at sites with many obstacles?

Sensor transmission range is approx. 100 m in open field with no obstacles. Each added repeater (MWSR2-900) extends it by approx. 1 km. Range may be reduced in places with many obstacles, such as steel structures, concrete walls and the inside of switchboards, so repeater positions are determined after reviewing site conditions.

CONTACT MPIA

Tell us about your site and conditions, and we will propose the right sensors and system configuration.

Let us know the installation location, quantity and systems to integrate with (PC · text messages · SCADA), and a technical specialist will reply directly.

No batteries, no wiring —
wireless safety solutions

In substations, inside switchboards, in hospitals and schools

Still putting batteries in your sensors and connecting wiring?