Terms of Service

What is Mandu?

Mandu is your friendly neighbourhood electronics shop in Vallila, Helsinki. From 2011–2018 the store was know us Månsteri Store. We aim to bring you high quality electronic components, Arduino compatible microcontrollers, robotics parts, basic electronic components and other tools for making things. Our focus is on providing parts for use in physical computing and interactive art projects.

The shop is still operated in the same location by the same person, Matti Niinimäki, who is an artist, designer, educator and maker based in Helsinki, Finland. Mandu is a subsidiary of Månsteri (2139444-0).

On this website the terms "We" and "Us" refers to Mandu.

Contact Information

Please use the Contact Us page to reach us.

Returns & Refunds

All orders have 14 day return period. Please note that returned items must be unused.

Products that are exempt from refunds or returns:

  • Gift cards

Always contact us before returning or requesting a refund using email (palautus@mandu.fi).

We of course refund or replace any clearly faulty products. If you suspect that the product you have purchased is faulty or broken on arrival, please contact us (palautus@mandu.fi). Note that most of our products require expertise and special skills in using them. We are not responsible for any damage to the products caused by user errors.


All prices include VAT 24%. Please contact us if you are a VAT registered business in another EU country for ordering without VAT.

We do not store your credit card information on our store. Our payment options are provided through Shopify or other third party services.

We offer a variety of payment options:


We aim to ship all orders within 1-3 working days. We currently only use services provided by the Finnish Posti through Pakettikauppa.

Shipments in Finland

Small Parcel

  • 5,70 EUR 
  • Shipping time: 2-3 working days
  • Maximum size: 35,3 x 25 x 3 cm, 2kg 
  • Delivered to your mailbox with normal post delivery. 
  • Includes light tracking. Not as specific as the tracking for other parcels.

Postal Parcel

  • 6,90 EUR 
  • Shipping time: Usually delivered the next working day from shipping. 
  • You will get an SMS message when your parcel has arrived to your nearest post office.
  • We will soon also offer shipping to Posti Parcel Points.

Express Parcel

  • 9,70 EUR 
  • Shipping time: Usually one working day 
  • The parcel will be deliver to the provided address. If the first delivery attempt is not successful, the parcel will be delivered to the nearest Posti service point. 
  • Posti does not contact the customer before delivery.
  • Best for company addresses.

Home Parcel

  • 14,70 EUR 
  • Shipping time: Usually in one working day after the delivery time has been scheduled
  • The parcel will be delivered to the home of the customer. Posti will contact the customer to schedule the delivery. The delivery time varies between 9 AM to 9 PM depending on the location. 

Shipments Outside Finland

We currently offer shipping to the following countries through Parcel Connect.

  • Estonia 9,99 EUR 
  • Latvia 9,99 EUR 
  • Lithuania 9,99 EUR
  • Sweden 11,95 EUR 
  • Germany 11,95 EUR 
  • Denmark 11,95 EUR
  • Netherlands 15,90 EUR 
  • Belgium 15,90 EUR 
  • Austria 15,90 EUR 
  • Poland 15,90 EUR 
  • Czech Republic 15,90 EUR
  • Bulgaria 19,90 EUR 
  • Spain 19,90 EUR 
  • Luxemburg 19,90 EUR 
  • Portugal 19,90 EUR 
  • Slovakia 19,90 EUR 
  • Slovenia 19,90 EUR 
  • Hungary 19,90 EUR 


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