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Description
Read this first
This is one bare light module the width of a pencil eraser
It is a small round circuit board with surface-mount LEDs on the face, clipped onto a lithium coin cell. It measures 0.37 in across and 0.20 in tall (9.6 x 5.3 mm) — a little over half the width of a US dime. There is no shell, no housing and no lens. You choose one light color, and you hide the module inside a model.
That bareness is the point for a model builder — it fits where a housed lamp will not — but it also means this is a component, not a finished consumer lamp. It contains a loose coin cell. Please read the safety section below before you order.
What "wireless" actually means here
No wires to solder. No base plate, either.
It carries its own battery
"Wireless" on this page means one thing: the module holds its own power, so there is no wire running out of your model to a battery box, and nothing to solder. The coin cell clips directly underneath the board.
It does not mean inductive or over-the-air power. There is no charging plate, no powered base, no USB cable and no receiver coil. If you have seen model lighting systems that work that way, this is not one of them.
You switch it with a magnet
There is no button and no slider. A magnetic sensor on the board does the switching: bring a small magnet close to the module and it responds, cycling through the lighting modes. That is what lets it stay sealed inside a finished model — you never have to reach in to reach a switch.
A magnet is included. The supplier's own listings for this part state that a small loose magnet ships alongside the battery. It is a plain magnet, not a wand or an applicator. To work the light, hold the magnet just above the module without letting it touch: about three seconds switches it on or off, and a brief touch steps to the next mode. Once the module is installed, keep the magnet away from it or it will keep switching. The magnet is small enough to lose — and, like the cell, small enough to be swallowed, so keep it away from children.
Eight modes
The controller runs eight lighting patterns — a steady on, plus a set of flashing, pulsing and cycling effects — so one module can read as a running light, a reactor glow, a warning beacon or a flicker depending on the pattern you leave it on.
The supplier names them as: steady on; a clockwise chase that builds from slow to fast; the same chase counter-clockwise; a flash; a fast breathe; a slow flash; a slow breathe; and a random twinkle. It also remembers where you left it, so it comes back on in the same mode rather than resetting to the first one.
Where builders use it
Small enough to disappear inside the build
At just over a third of an inch across, the module tucks into spaces that a wired LED and its harness cannot reach — a chest cavity, a thruster bell, a cockpit, a doorway in a diorama building, the inside of a resin print. Because nothing trails out of the model, the finished piece can still be picked up, turned and moved around a shelf.
It is used most often on scale mecha and figure kits, on tabletop miniatures and terrain, on dioramas, and inside 3D prints. The light throws from the face of the board, so builders generally aim the face where they want the glow and let the model's own plastic diffuse it.
One honest limitation: this is a point source on a coin cell, not a room light. It reads as a glow or an accent within a model at arm's length or in a display case. It will not light a shelf, a scene or a room, and it will not photograph like studio lighting.
Specifications
What we can actually state
Two things the previous version of this page stated that we have removed rather than repeat. It printed a body-color list that belongs to a different item altogether — this module has no painted body, and the option above selects the color of the light. And it named a housing material for a part that, in the supplier's own photographs, is an exposed circuit board on a metal battery clip. We hold no material report and will not name a polymer we cannot evidence. Runtime, brightness and the LED count per module are not documented either; the modules we have been shown do not all carry the same number of emitters, so no figure is printed here.
Safety — please read before buying
This product contains a loose lithium coin cell
We would rather tell you this before you order than have you discover it in the box.
- Swallowing a coin cell can cause severe, life-threatening internal burns. A cell lodged in the throat or gut can begin burning through tissue in around two hours. It is a medical emergency, and it does not always announce itself — a child can swallow one and show nothing at first. If you think anyone has swallowed a cell, get emergency medical help immediately and call the Poison Help line at 1-800-222-1222.
- The battery is not held in a child-resistant compartment. There is no compartment at all. The cell sits in an open metal clip on the underside of the board and can be slid out by hand, with no screw, no latch, no lid and no tool. You can see this in the supplier's own photograph above. It also means the cell can work loose on its own if the module is knocked or dropped.
- The module, the cell and the magnet are all small parts. At 0.37 in across, the module and the cell inside it are both small enough to be swallowed by a young child, and so is the loose magnet that comes with it. Swallowed magnets are dangerous in their own right, particularly if more than one is swallowed. Keep all of it, and any model it is fitted to, away from children and pets.
- No warning label ships on the product. The module is too small to carry one. The supplier's own product manual carries only a general instruction to keep the item away from children and not to take it apart — it does not mention the battery at all, and we have not been shown packaging carrying a battery-ingestion warning, an age grade, or a manufacturer name and address.
- We hold no safety certification for this item. No third-party test report, no conformity certificate and no evidence of testing against the US button-cell battery standard has been supplied to us. We claim none, and nothing on this page should be read as one.
- Our recommendation. Treat this as a workshop component for an adult model builder, kept and used the way you would keep any loose battery — not as a toy, and not as something to hand to a child or to fit into a model a child will handle.
If that is not the basis on which you wanted to buy a light, please do not buy this one. We would rather lose the order.
One tiny module, one color, hidden inside the build
Choose the light color above. What arrives is a bare module the width of a pencil eraser, with a coin cell clipped underneath and eight lighting patterns you step through with a magnet.
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