433MHz M40 Wireless Light Switch Single Key

Sale price50,09 zł
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User manual (PL)

The offer applies to the button only; the receiver can be purchased as part of a separate offer. Sets are also available.

Discover how easy it is to upgrade your home lighting. The Spreest wireless light switch requires no batteries— power is generated by the click of a button. The strong 433 MHz signal reaches up to 200 meters outdoors and 50 meters indoors, without interference from walls or doors.

One button can simultaneously operate any number of lamps , and the receiver remembers up to 10 switches , so you can expand your installation whenever you want.

For installation, you can use double-sided tape or two screws, so there's no need to break plaster or new cables, and the waterproof button and 200,000-click lifespan guarantee years of trouble-free use – from the bathroom to the garden gazebo.

Key Features

They concern the complete receiver set with the button.

  • Zero batteries, zero costs – micro-kinetic technology powers the panel for ~20 years.
  • Range up to 200m / 50m – stable 433MHz signal passes through walls and doors.
  • Control from multiple locations – 1 receiver ↔ 10 panels, 1 panel ↔ any number of receivers.
  • Quick installation – strong double-sided tape or two screws; no new cables required.
  • Remembers settings – after a power outage, returns to the last state, no need to pair again.
  • Waterproof and durable – > 200,000 clicks, moisture-resistant housing (e.g. bathroom, gazebo).
  • Proven in practice – users praise the simple installation, solid construction and long range.

Installation options

  • Multiple switches - 1 fixture: perfect for long corridors, stairs or open living rooms; you can easily add more panels without tearing up the walls.
  • 1 switch – multiple receivers: With a single click , you can illuminate multiple circuits simultaneously – for example, an entire yard or LED zones in the garden. Installation is as simple as inserting the receiver between the power supply and the lamp and gluing or screwing the panel wherever convenient.
  • 1 switch – 1 fixture: a quick solution for small rooms (bedroom, office).

Unlimited possibility of expanding the set, just purchase additional receivers available as part of another offer.

Specification

Button

  • Power: kinetic energy
  • Frequency: 433 MHz (FSK/ASK)
  • Range: 200 m (outdoors) / about 50 m (indoors)
  • Waterproof: yes
  • Click Lifespan: > 200,000
  • Dimensions: 115 × 72 × 17 mm
  • Weight: 66 g

The set includes

  • 1x Switch
  • Mounting accessories
  • User manual

Additional components available through other offers.

The Polish manual is available as an electronic download in the attachment. You can find it above or below our product description .

Frequently asked questions

Q1: Does the wireless light switch require batteries?

  • A1: No, a self-powered switch converts kinetic energy into electrical energy.

Q2: What is the maximum range of the wireless signal?

  • A2: Indoor range is 99ft/30m and outdoor range is 525ft/160m.

Q3: How many receivers can be controlled by one control panel?

  • A3: The control panel can control an unlimited number of receivers.

Q4: Does the controller retain settings after a power failure?

  • A4: Yes, it retains your settings. You don't need to pair your devices again when power is restored.

Q5: What does a self-powered switch mean?

  • A5: The kinetic switch uses advanced microkinetic technology to convert energy from pressure into power for the panel. It has a lifespan of up to 20 years without the need for batteries.

Q6: Can one switch control 3 receivers (lights on different circuits) simultaneously?

  • A6: Yes, one switch can control 3 receivers simultaneously.

Q7: How many switches can be used in one house?

  • A7: The number is not specified, but one user reported using 8 switches without problems.

Q8: Can the switch be mounted on the wall with screws?

  • A8: Yes, you can. Simply remove the cover, attach the mounting plate to the wall, and then put the cover back on.

Q9: Does the switch need to be used frequently to generate enough kinetic energy?

  • A9: The energy needed to power the switch is generated when it is pressed, so it does not matter how often it is used.
✦ AIWhat customers say

Customers most often praise the reliable operation, easy installation, and ability to control lighting without running extra wires. A few note that the receiver may not fit in a small wall box and that the range can be unreliable in some conditions; they also mention the unit’s thickness and a button that needs a firmer press.

Summary generated automatically (AI) from customer reviews.

s…1 01.11.2026
Bought on Allegro

It works, pairing was problem-free. You have to press the button a little harder than a regular one, which an older person will notice. The module doesn’t fit in a flush-mounted box, so it’s better suited for installation in a distribution board. No problems with the range through walls.

+Works every time.

−It takes a little more force to press than usual.

Translated from Polish

C…7 09.11.2025
Bought on Allegro

Check the dimensions; it doesn’t fit a standard 67 mm round box (my mistake :) ). Range through the corner of a built-in fridge is just under 2 metres: sometimes it turns on, sometimes it doesn’t… The signal transmitter seems to be somewhere along the lower short edge of the switch (where you press the button). It works better when that edge faces the receiver.

+The switch doesn’t need a battery.

−See reviews.

Translated from Polish

P…3 30.12.2025
Bought on Allegro

Now that’s a solution. Brilliant. We forgot to disconnect the lights and… it still worked :) The installation isn’t complicated; the seller sends a link to the installation instructions. I recommend it.

−None.

Translated from Polish

C…6 10.02.2026
Bought on Allegro

At a distance of 50 m outdoors, it only works intermittently, so you can’t rely on it. Otherwise, it works better than all the others I’ve tried.

+No battery.

−It definitely doesn’t work at 200 m.

Translated from Polish

C…7 05.05.2025
Bought on Allegro

There wasn’t a third lighting circuit in the kitchen, but now look at that—we can easily control the under-cabinet lighting without tearing up the walls and ceiling. Great solution.

+Easy to install, no need to worry about a battery.

−I haven’t noticed.

Translated from Polish

k…f 26.11.2025
Bought on Allegro

Small but delightful. Installation is a breeze. Everything works. Pay attention to the dimensions, as it’s quite large. The thickness was an issue for me in particular (I had to change my installation plan).

Translated from Polish

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Store reviews are written by customers who bought the product in our store — we send a review request after delivery. They are marked “Verified purchase” when linked to a confirmed order.

Allegro reviews come from people who bought this product from Spreest on Allegro (“bought from Spreest” on Allegro). We show them with their source and do not edit them.

We never remove reviews because of a low rating. We only hide spam, unlawful content or personal data. Reviews written in exchange for a discount code (regardless of the rating) are marked. The “What customers say” summary is generated automatically (AI) from the reviews.

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