> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Kitronik Dark Activated Colour Changing Night Light Kit

**Type:** Product page · **SKU:** KT-2120 · **Brand:** [Kitronik](https://core-electronics.com.au/brands/kitronik-australia)
**Page:** https://core-electronics.com.au/kitronik-dark-activated-colour-changing-night-light-kit.html ([markdown](https://core-electronics.com.au/kitronik-dark-activated-colour-changing-night-light-kit.html.md))

The colour-changing LED in this nightlight kit is automatically illuminated and starts to cycle through various patterns when the light sensor has detected that is dark

## Pricing

- **Price:** $6.75 (inc GST) — $6.14 AUD, exc GST
- **Quantity discounts:** 10+ $5.89 (exc GST) · 25+ $5.71 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 300 more in 8–10 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=KT-2120:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/KT-2120:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

The colour-changing LED in this nightlight kit is automatically illuminated and starts to cycle through various patterns when the light sensor has detected that is dark. The kit uses a light-activated board with a colour-changing LED. The kit includes the light-activated switch project kit (part 2112), accompanied by a battery clip, battery cage and rainbow LED. All are individually bagged and ready for your students to build.

### Features:

- When in darkness, this Easy Build Kit generates an array of different coloured illuminations using a Colour Changing LED.

### Contents:

- 1 x 1M? Potentiometer.
- 2 x BC337 NPN Transistor.
- 1 x 220? Resistor.
- 1 x Phototransistor.
- 1 x Colour Changing (Rainbow) LED.
- 1 x PP3 Clip Leads.
- 1 x 4AA Battery Holder.
- 1 x Night Light PCB

### Dimensions:

- PCB Length: 53mm.
- PCB Width: 25.5mm.

### Requires:

- 4 x AA Batteries.
- Soldering Iron.
- Solder.
- Wire Cutters.

### Note:

- This kit requires soldering.

### Resources

- [Build Instructions](https://core-electronics.com.au/attachments/localcontent/2120-dark-activated-colour-changing-night-light-essential-information_338387f8a17.pdf).
- [Teaching Notes](https://core-electronics.com.au/attachments/localcontent/2120-dark-activated-colour-changing-night-light-teaching-notes_72824dee149.pdf).
- [Autodesk files for this product](https://core-electronics.com.au/attachments/localcontent/autodesk_activated_colour_changing_night_light_kit_2120_37314e8f855.zip).
- [3D CAD Files](https://core-electronics.com.au/attachments/localcontent/2120_dark_activated_colour_changing_night_light_kit_v_1_0_239661275cf.zip).

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/O/SO-2120-2.jpg)