Who is Vamoz Solutions?

Vamoz Solutions is our staffing partner, helping find skilled people for larger projects when needed.

Do you work with other partners too?

Yes, we work with trusted partners and add them here as those collaborations grow.

How many employees does SAK Service Oy have?

The team currently consists of founder Aleksanteri Kosonen and electrical and automation installer Roni Ovaska, and the organization grows as new talent joins.

Is SAK Service Oy currently hiring?

We’re always looking for people who share the same commitment to quality — get in touch if you’re interested.

Do you work with engineering firms?

Yes, we work with Idän Insinöörit Oy in Saimaanharju, with automation designer Keijo Leskelä as our contact.

Electrical & automation — Lappeenranta

We solve your electrical and automation problems.

Electrical and automation solutions from a single provider — from design and installation to programming, commissioning and maintenance.

One call. No middlemen.

044 201 4039

Call now WhatsApp Leave a message

Experience

Since 2018

On call

24/7

Siemens · Beckhoff · Pilz

Fault service

Equipment down or production stopped?

Our on-call engineer answers around the clock. We diagnose the fault first by phone or remote connection and come on site when needed.

Call the on-call line: 044 201 4039

Danger to life or fire: always call 112.

CallDescribe the fault and the site.
DiagnosisFault finding by phone or remote connection.
ActionRepair or on-site visit as required.

Field experience

Paper and wood industry
Power plants
Heavy industry
Food industry (incl. Fazer)
Commissioning in Estonia
Buildings and IT equipment

Our services

Areas of expertise

One partner throughout the project: from design and installation to commissioning and on-call support.

Installation

Electrical installations

Electrical installation and repair for private and business customers — from small property installations to industrial control cabinets and power-plant environments.

Programming

Automation programming

PLC programming to IEC 61131-3 for Siemens, Beckhoff/TwinCAT, Allen-Bradley and Omron platforms, including safety logic.

Commissioning

Design & commissioning

Electrical drawings, SCADA interfaces and commissioning at domestic and international sites.

24/7 support

Fault diagnostics & emergency response

We are on call around the clock: fault diagnosis by phone or remote connection and, when needed, a visit on site.

Safety

Machine safety & consulting

Risk assessments, CE marking and safety verification of control systems in accordance with ISO 13849-1.

Training

Device training

Practical user training for devices and software, including Windows, iOS and Android environments.

IT device service

Computer & electronics repair

Fault analysis and repair of computers and electrical equipment.

Data recovery

Data recovery from damaged disks, phones and other devices.

Pricing

Clear prices, no surprises

We bill by the hours actually worked, so you only pay for the work done. Use the calculator below for an indicative estimate or ask us for an exact quote — larger and recurring jobs are always agreed case by case.

Private customers

Electrical installations & repairs

€50.20/h

incl. 25.5% VAT (€40.00/h + VAT)

Installations, alterations and fault finding
Billed by the hours actually worked
Labour eligible for the Finnish household tax credit

Partnerships & subcontracting

For renovation, construction and electrical firms

from €35.00/h

+ VAT if applicable (reverse charge for construction services)

Electrical subcontracting for renovation and construction projects
Recurring work and partnership agreements
On-call agreements as needed

Contract rates are always agreed case by case, based on the scope and continuity of the work.

Industry & IT

Automation, PLC & IT service

Quoted per project

based on the scope of the project

PLC programming and commissioning
Machine safety and CE marking
Computer repair and data recovery

Travel €0.60/km + VAT

Materials invoiced separately as used

Larger jobs price can be negotiated case by case

Indicative

Price calculator

Pick the type of work and an estimated duration to see the price instantly. The final price depends on the actual hours and materials used.

Customer

Private Business

Type of work

Estimated duration: 2 h

Total distance (km, round trip)

Hourly rate (excl. VAT): –
Labour: –
Travel: –
Subtotal (excl. VAT): –
VAT 25.5%: –
Estimated total: –

Materials are not included. The labour share may qualify for the household tax credit.

Request an exact quote

Hourly rate or fixed price?

Hourly — our recommendation

You pay only for the time actually spent. You get an indicative estimate up front, and the invoice matches the work done. Usually the most affordable option.

Fixed total price

Agreed in advance for the whole job. Because the price has to include a margin for surprises, a fixed price is usually higher than hourly billing.

Contracts & partnerships

Subcontracting, recurring work and on-call service are always agreed case by case. The price depends on the scope and continuity of the work, and reverse-charge VAT is used for construction services where applicable.

Frequently asked

How much does electrical work cost?

For private customers, electrical installations and repairs cost €50.20/h incl. VAT (€40.00/h + 25.5% VAT). Travel is €0.60/km + VAT, and materials are invoiced separately as used. Use the price calculator for an indicative estimate.

How do I get a personal quote?

The fastest way is to call 044 201 4039 or fill in the contact form — we usually reply quickly.

Can I claim the household tax credit for electrical work?

Yes. As a private customer in Finland, you can claim the household tax credit for the labour share of electrical work done in your home. We itemise the labour share on the invoice.

Finland first — green energy

Finnish innovations we are proud to highlight

We favour Finnish expertise, green energy and solutions that reduce carbon footprints. SAK Service Oy’s business also includes importing and product development: here we highlight Finnish innovations whose teams we admire — more products are on the way.

Soweri — The Pod

A sensor that installs without a plumber

No plumber, no pipework, no wiring — just numbers, never the water.

The battery-powered Pod mounts on a bathroom wall or shelf with no plumbing, no wiring and no separate permits. It never touches water — it reads the room, not the pipe — and turns what it senses into data. One bathroom installs in minutes, a whole hotel in an afternoon. Nothing is recorded: no camera, no audio — only the result ever leaves the device.

soweri.fi

MyyWorks

Experts from different fields, one problem

Old problems stay unsolved because everyone looks at them from the same direction.

MyyWorks brings experienced people from different fields around the same table to solve problems that are usually seen from only one angle. They build only what is worth building — and what also works as a business.

myyworks.fi

In-house product development

Kenttävainu (“Field Instinct”)

Loop simulation and Ethernet diagnostics, in one field tool.

A field diagnostics multi-tool for automation technicians: a galvanically isolated analog simulator (4–20 mA source, ±10 V, ramp, loop supervision) and Ethernet tools – device discovery and IP address assignment regardless of vendor – in one battery-powered unit. Built in-house, named for what it does: sniffs out the fault before you do.

Try the virtual demo → Ask about it

How Kenttävainu works, technically

On the network side Kenttävainu speaks each device’s own standard protocol, so it is not tied to one vendor. EtherNet/IP devices (e.g. Allen-Bradley, Omron, Beckhoff EK9500) are found with a ListIdentity query, and their IP address, BOOTP/DHCP mode and link speed/duplex are set with CIP messages. Profinet devices (e.g. Siemens, Beckhoff EK9300, Phoenix Contact, WAGO) are found and addressed with DCP – even before they have an IP address.

Other devices are found with ARP queries on the local subnet, and devices asking for an address show up from their BOOTP or DHCP request. Kenttävainu can assign such a device an address by its MAC address and, on EtherNet/IP devices, turn BOOTP off right away so the address is kept. The same IP on two devices is flagged as an IP conflict. A DHCP/BOOTP server, ICMP ping and Modbus TCP scan are included too.

Limitations, plainly: changing an IP address requires the device to support EtherNet/IP or Profinet DCP, or to be in BOOTP/DHCP mode. Some devices refuse the change (e.g. a Siemens CPU whose address is set in the hardware project). Setting the Profinet device name is not included yet. The device is at prototype stage and compatibility is being confirmed in field tests.

Functionality

One-press discovery: EtherNet/IP, Profinet DCP, ARP and BOOTP/DHCP requests
IP address assignment for EtherNet/IP (CIP) and Profinet (DCP) devices
Address assignment by MAC address (BOOTP/DHCP), then made static via CIP
BOOTP, DHCP or static mode, plus 10/100 Mbit/s and duplex for EtherNet/IP devices
Device details: model, vendor, revision, serial number, Profinet name and MAC; IP conflict detection
DHCP/BOOTP server, ICMP ping (latency and loss), Modbus TCP scan and 8 network profiles
4–20 mA source with its own 24 V (0–24 mA, NAMUR fault levels), into the PLC card’s 4-wire terminals
±10 V voltage output, ramp and 25 % step test
Loop supervision: actual current and loop voltage, warnings for an open loop or too high a load
Galvanically isolated analog side, 18650 battery and calibration from the menu

In-house development — experimental

PLC Code Transpiler

Convert TIA Portal XML / STL / SCL to C and view it as a LAD or FBD diagram.

A browser-based tool that converts TIA Portal Openness XML, STL and SCL code between each other and into C, and draws the logic as a ladder (LAD) or function block (FBD) diagram. Supports contacts, series and parallel branches, AND/OR/XOR/NOT and set/reset coils; timers and counters are not yet included — always verify the result yourself.

Try the tool →

In-house development — experimental

AutoPLC — AI code generator

Describe PLC logic in plain language, get a ready TIA Portal code block.

Describe your PLC logic in plain language and AI (Anthropic Claude) turns it into a TIA Portal Openness-compatible STL or SCL code block ready to copy. The tool does not import the code into your project automatically — review it and import it yourself.

Open the AutoPLC demo →

In-house development — experimental

P&ID & PLC workbench

Simple P&ID text notation drawn as a panel image, plus PLC tool links.

Write a simple P&ID notation (tanks, pumps, valves, sensors) and the tool draws it as a panel image in a Siemens HMI frame. The same view links to all our PLC tools.

Open the P&ID workbench →

Siemens WinCC – own projects

PLC & HMI games

PLC Tic-Tac-Toe Extreme and Snake on a Siemens PLC. Play in the browser or take the game to your own WinCC Advanced or Unified panel.

Open games →

+ plenty more on the way — we’ll be back with details soon.

Frequently asked

What does SAK Service Oy’s importing and product development involve?

We highlight and support Finnish innovations, such as the Soweri – The Pod sensor and the MyyWorks community, and we also develop our own tools, such as the Kenttävainu field diagnostics device.

Are more products coming?

Yes, the list will be updated as new Finnish innovations come up.

Sponsorship

We support Finnish sport

We value Finnish sport, and we support it.

Sponsorship — Finnish sport

Still Møykky

We sponsor the Still Møykky channel, which creates content around strength training and bodybuilding. Supporting Finnish sport and exercise matters to us, and we want to be part of cheering it on. Møykky trains at a high level, and competitive bodybuilding demands a strict diet that’s genuinely expensive by today’s standards — which is exactly why this support matters.

YouTube: @stillmoykky Support the competition prep

Sponsorship — Finnish sport

Samu Kunttu

Samu Kunttu makes YouTube videos about motocross and enduro. The channel rides KTM two-strokes such as the SX 125 and 300 EXC — on the track, off-road and on snow in winter — with riding videos, bike test rides and plenty of two-stroke sound. We support Samu because we want to back Finnish athletes and creators who inspire others to get moving and try motorsport.

YouTube: Samu Kunttu

Sponsorship — Shooting & night operations

Night Sight Finland

Night Sight Finland is a Finnish organisation founded out of a passion for night vision and safe firearms handling. It runs live-fire night vision shooting competitions and courses, hosts the Night Vision Expo where visitors get hands-on access to manufacturers’ products, and publishes educational content on YouTube. The aim is to bring equipment into real use environments where performance, reliability and practicality truly matter. We support Night Sight Finland because we value safe, well-run activities and Finnish expertise.

Website: nightsightfinland.com YouTube: @nightsightfinland

Frequently asked

Why does SAK Service Oy sponsor sports?

We value Finnish sports and want to support them concretely, for example through Still Møykky, Samu Kunttu and Night Sight Finland.

Can I support Still Møykky myself?

Yes, you can support the competition preparation directly via the link on this page.

Founder

Aleksanteri Kosonen — electrical and automation designer, also qualified as an electrical and automation installer

SAK Service Oy is an electrical and automation company based in Lappeenranta. Founder Aleksanteri Kosonen started in the field before his engineering studies, training as an electrical and automation installer, and has since worked on numerous industrial projects from pulp and paper to power plants, heavy industry and the food industry — including work with Fazer — as well as an international commissioning project in Estonia.

We deliver our work both independently and in close collaboration with clients — from small property installations to the most demanding industrial automation projects. Every solution is built with care and without compromise. Alongside our electrical and automation background, our expertise covers IT devices: our founder has worked as an Apple Authorized Service Provider technician, so we also handle the installation and servicing of computers, phones, tablets and other IoT devices.

SAK Service Oy’s business covers electrical and automation design, installation, programming and commissioning, industrial automation consulting and training, importing, and product development.

Qualifications

SFS 6002 electrical work safety card
Siemens certification (TIA, S7-1500, WinCC, Safety)
Beckhoff / TwinCAT 3 training
Pilz machine-safety expert training (ISO 13849-1)
Occupational safety, hot-work and first-aid cards

PLC platforms

Siemens Beckhoff / TwinCAT Allen-Bradley Pilz Safety Omron Schneider

Languages

Suomi — native English — excellent Русский — excellent

Work history

2026–
SAK Service Oy CEO and automation designer · Lappeenranta
2026–
Esys Oy Automation designer · Lahti
2023–2026
Comatec Group Special design engineer, automation
2023
Oilon Automation engineer · Lahti
2023
Ferroplan Oy Automation engineer · Orimattila
2022–2023
Jartek AI Oy Automation engineer · Lahti
2021–2022
Rejlers Design engineer
2018–2021
Comatec Group Senior design engineer, automation
PLC programming for clients such as Stora Enso, electrical diagram design and customer work with Finnish and international clients. From April 2019 seconded to the Outotec factory in Lappeenranta: automation programming, process control, panels and safety systems.
2018
Onninen Sales and customer service · Imatra
Wholesale of HEPAC and electrical products.
2017–2018
Omena Group Ky Customer service and sales specialist · Lahti
Apple Premium Reseller store: sales, device and software repairs and home visits. Official Apple training completed.
2016
LSK Technology Oy Electronic assembler · Lahti
Assembly of industrial electrical control centres (internship).
2016
LSK Electrics Oy Customer service assistant · Lahti
Wholesale of HEPAC and electrical products.

Education and courses

2025–2026
Tampereen yliopisto Robotics technology
2025
AVEVA InTouch HMI training
2020–2024
JAMK Mechatronics, robotics and automation engineering, bachelor studies
2019
Beckhoff Automation Oy TwinCAT 3 training
2019
AEL AutoCAD basic course

Source: LinkedIn profile.

Siemens WinCC – own projects

Try a browser version of Snake — the original runs entirely on a Siemens PLC and a WinCC HMI panel.

See the Siemens project →

See full work history and projects on LinkedIn

Get in touch

Tell us about your project

Call, email or describe the situation in the form — we reply quickly.

Call now Send an email

Phone 044 201 4039 Email info@sakservices.fi LinkedIn /in/aleksanteri-kosonen

Location Lappeenranta · jobs nationwide

Tell us about your situation

A few words about the situation are enough — you can attach a photo too.

Name

Phone or email

Describe the situation

Take or attach a photo of the broken item (optional) Choose or take a photo No photo selected

On a phone this opens your camera directly — the photo is attached straight to the outgoing email.

If the form doesn’t work for some reason, you can also reach us directly at info@sakservices.fi.

Frequently asked

Questions we are often asked

How quickly can I get an electrician in Lappeenranta?

Our on-call line is answered around the clock, and we can often be on site the same day, depending on urgency and location.

Do you fix automation and PLC faults remotely?

Yes. Many programming and PLC faults can be diagnosed and fixed remotely, and we will come on site as well if needed.

Do you also repair computers and phones?

Yes, we also repair computers and other electronic devices, and offer data recovery from broken devices when needed.

Does SAK Service Oy have machine-safety expertise?

Yes, we carry out risk assessments, CE markings and control-system safety checks in line with ISO 13849-1.

Do you handle both small and large electrical jobs?

Yes, we handle electrical and automation work from small property jobs to heavy-industry commissioning.

Which PLC platforms do you work with?

We program Siemens, Beckhoff/TwinCAT, Allen-Bradley, Omron and Schneider platforms, including safety logic.

How do I know my PLC system needs an upgrade?

Common signs include repeated stoppages, spare-part availability issues for old hardware, and the manufacturer ending support. We assess the situation and recommend the right upgrade path.

Can an old PLC system be upgraded without a long production stop?

Often, yes. We plan the upgrade so preparation happens in advance and the actual swap is scheduled into as short a production stop as possible.

Who is behind SAK Service Oy?

SAK Service Oy was founded by Aleksanteri Kosonen, an electrical and automation designer from Lappeenranta with experience from industrial projects including work with Fazer.

Does Aleksanteri also have IT device experience?

Yes, he has worked as an Apple Authorized Service Provider technician and also handles computer and mobile device repair.

What’s the fastest way to reach SAK Service Oy?

By phone at 044 201 4039 — that is the most reliable and fastest way to reach us.

Can I attach a photo to the contact form?

Yes, you can attach a photo of the broken item, and also try the AI-based product identification feature.

Privacy notice

Data controller
SAK Service Oy (Y-tunnus 3654465-9)
Aleksanteri Kosonen, Lappeenranta
info@sakservices.fi · aleksanteri.kosonen@sakservices.fi · 044 201 4039

What data is collected
When you use the contact form, it sends the information you provide — your name, phone number or email, your message, and any photo you attach — by email directly to SAK Service Oy. The form’s data is not stored in a separate database; it travels through the form service as an email between you and SAK Service Oy.

Purpose and basis of processing
The data is used only to respond to your enquiry, prepare a quote, and carry out any resulting assignment. The legal basis is preparing a customer relationship and the legitimate interest of responding to a received enquiry.

Retention period
Enquiries received by email are kept for as long as needed to manage the customer relationship, quote, or accounting obligations, following normal email retention practice.

Disclosure of data
Data is not disclosed, sold or rented to third parties. Data may be disclosed to authorities only where required by law. The contact form message is sent by email to SAK Service Oy through the website’s own server and is not passed to any external form service.

AI services (Anthropic Claude)
The site has three optional AI features that send your submitted content, via our server, to Anthropic PBC’s Claude AI (United States): the contact form’s photo recognition, the AutoPLC code generator’s text prompt, and the site’s AI chat (your messages; if you request contact, the name, contact details and description you give are emailed to SAK Oy after you confirm). The chat identifies itself as an AI and does not give binding price or schedule estimates. Do not type passwords or personal ID numbers into the chat. Anthropic does not use content sent via the API to train its models, and it is automatically deleted from their systems within 30 days. The transfer outside the EU is protected by Anthropic’s Standard Contractual Clauses. None of the features is required.

Cookies and third parties
The site does not set tracking or marketing cookies. Fonts are served from our own server, so your browser makes no third-party connection for them. The page anonymously counts how often the call, WhatsApp, email, form and chat buttons are used; the counter uses no cookies and stores no IP address or other personal data. The WhatsApp button opens WhatsApp, which is governed by its own terms.

Your rights
You have the right to check, correct, or request deletion of your processed data by contacting the details above. You may also file a complaint with the Office of the Data Protection Ombudsman (tietosuoja.fi) if you believe your personal data has been processed unlawfully.

We solve your electrical and automation problems.

Equipment down or production stopped?

Areas of expertise

Electrical installations

Automation programming

Design & commissioning

Fault diagnostics & emergency response

Machine safety & consulting

Device training

Computer & electronics repair

Data recovery

Clear prices, no surprises

Electrical installations & repairs

For renovation, construction and electrical firms

Automation, PLC & IT service

Price calculator

Hourly rate or fixed price?

Hourly — our recommendation

Fixed total price

Contracts & partnerships

Frequently asked

Finnish innovations we are proud to highlight

A sensor that installs without a plumber

Experts from different fields, one problem

Kenttävainu (“Field Instinct”)

PLC Code Transpiler

AutoPLC — AI code generator

P&ID & PLC workbench

PLC & HMI games

Frequently asked

PLC tools

PLC Code Transpiler

AutoPLC — AI code generator

P&ID & PLC workbench

PLC & HMI games

Business partner

Vamoz Solutions — more than a staffing solution

Idän Insinöörit Oy

Frequently asked

We support Finnish sport

Still Møykky

Samu Kunttu

Night Sight Finland

Frequently asked

Aleksanteri Kosonen — electrical and automation designer, also qualified as an electrical and automation installer

Qualifications

Work history

Education and courses

SAK Service Oy’s organisation

Frequently asked

Tell us about your project

Tell us about your situation

Questions we are often asked