Professional security electronics for 35 years

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Who we are

PPO-Elektroniikka Oy is an independent, privately owned company in Finland. Our main office is in Helsinki. During our 35 years of experience in R&D and sales of professional electronics, our highly professional team has developed a wide range of products such as GSM -modem technology for M2M-applications, remote monitoring and water leakage alarm system.

Our main activity is the engineering and sales of MEV – the multi-generational product family of electrical isolation monitoring system to critical environments such as hospitals.

We represent also several internationally known safety-electronics brands in Finland, the Baltic States, Eastern Europe, and Russia.

Our strength is in delivering all-inclusive solutions from designing to implementation, as well as offering support and maintenance to our clients.

Our solution

MEV Insulation Monitoring System for hospitals

We have created MEV Insulation monitoring system to hospitals to provide constant, safe and secure monitoring of electrical systems.

The monitoring of the previous conditions is a very important, albeit invisible part of the everyday life in settings, where defective electrical equipment can cause seriously dangerous situations, for example in operating rooms. Earth (grounding) leakages of electrical currents occur in new and old electrical devices alike. They can even cause the death of people around the defective equipment.

In the previous environments, if the preliminary conditions for a malfunction begin to form in the electricity supply of the devices in critical environments, MEV-7 immediately alarms and thus prevents the accidents at a very early stage thus saving money and even human lives.

24 000 MEV Insulation Monitoring systems have been delivered by PPO-Elektroniikka Oy since 1981 in Finland.

MEV-7 –type insulation monitoring systems are required in the operating rooms in all countries in the European Union due to EU regulation in EC DIRECTIVE 89/336/EC and EC DIRECTIVE 1999/5/EC.  Yet, in Europe, the system has been mandatory in all operating room since 1993 only in Finland.

MEV is also suitable for other critical environments such as chemical laboratories.


The absolute reliability of electrical systems is of vital importance in operating rooms, where defective electrical equipment can cause seriously dangerous situations. 

There are several Compelling Reasons to Use MEV-7 in Critical Environments:

  • The early detection of potential electric faults prevents risky situations during critical functions – for example, during surgeries – potentially, even saving the lives of personnel, patients and clients 
  • More efficient & effective usage of valuable surgical and/or other production equipment due to
    • Predictable and timely maintenance which results in substantially smaller operating costs;
    • Due to previous – better productivity of own staff – you can plan in advance when you need personnel to perform operations.
  • Significantly increased lifetime of expensive surgical and/or production equipment

Long before an electric fault occurs, MEV-7 notifies personnel to preventively correct possible future insulation faults, PE-wires’ and isolation-transformer malfunctions. Thus, insulation faults can be corrected well before they lead to a power failure because the personnel are alerted plenty of time before an incident is even in the making. In this way your complex and expensive equipment, and the people around it can be saved from harm and used more productively. This also enables to plan fault repairs in advance to better suit maintenance purposes and clients’ needs.    

What we are looking for

We are expanding our business worldwide. We are looking for new customers and partners – feel free to contact us and let us know your proposals.

Factors affecting electrical safety in hospitals isn´t known in common. What happens in operating rooms behind the scenes could be very interesting subject for health and hospital sector publications.         

See our wide range of products and solutions on our website www.ppo-elektroniikka.fi.

We shall be happy to work with you.

Contact information

Timo Ohtonen

General Manager


+358 400 420 393


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