How many pieces are in the Optosensors (4.5V) and Discs?

Optosensors (4.5V) and Discs contains 4 pieces.

What age is the Optosensors (4.5V) and Discs recommended for?

This set is recommended for ages 18+.

When was the Optosensors (4.5V) and Discs released?

Optosensors (4.5V) and Discs was released in 1986.

🏛 Technic

Set #1343

Optosensors (4.5V) and Discs

Name: Optosensors (4.5V) and Discs
Brand: LEGO
SKU: 1343-1

The Optosensors (4.

🏆 Best For: LEGO Technic enthusiasts and collectors interested in early LEGO robotics. ⏱ 0.5 hr build 🧩 4 pcs

★★★☆☆ 3.8

A simple but historically significant set, praised for introducing light sensors to LEGO Technic. However, some find it too basic compared to modern LEGO sensor technology.

MSRP

$6.99

Best Price

$7.99

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📝 Our Take

The Optosensors (4.5V) and Discs set is a pioneering piece of LEGO Technic history. Released in 1986, this set introduced the concept of light-based sensors to the LEGO world, enabling builders to create interactive and responsive models.

This set is perfect for LEGO Technic enthusiasts and collectors interested in the early days of LEGO robotics. Its simplicity and unique function make it a valuable addition to any vintage LEGO collection.

Skip this if you are primarily interested in modern, feature-rich LEGO sets. Contemporary LEGO Technic sets offer more advanced sensor technology and capabilities.

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How does the light sensor work in this set? What kind of models can you build using these optosensors? How does this set compare to modern LEGO sensors? Is this set a good addition to a vintage LEGO collection?

🧱 Building Experience

🧩

Pieces

⏱

0.5h

Build Time

📊

Beginner

Difficulty

Build Highlights:

Introduction to light-based sensors in LEGO models
Simple and straightforward assembly
Unique functionality for creating interactive models
A piece of LEGO Technic history

📈 Investment Analysis

→ Price stable

Investment Grade

⏳ Active

The Optosensors (4.5V) and Discs set, while small, holds moderate investment potential due to its age and unique function within the LEGO Technic theme. As a piece of LEGO history, it attracts collectors interested in vintage and technologically significant sets. The low piece count somewhat limits its potential, but its rarity and the increasing interest in vintage LEGO Technic could drive its value up over time. However, its simple design and limited play value may temper significant appreciation.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

⚖ Compare Similar Sets

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Compared to modern LEGO Technic sensor sets, the Optosensors (4.5V) and Discs set offers a simple, vintage experience. While lacking the advanced features of newer sets, it provides a glimpse into the early days of LEGO robotics. Collectors interested in the history of LEGO technology might prefer this set, while those seeking advanced functionality would opt for modern alternatives.

📦 Full Parts Inventory - 2 unique parts • 4 total pieces

Technic Disc 3 x ...

Part #: 2723pr0005 2× White

Sensor, Light, 4.5V

Part #: upn0178 2× Black

This set contains early versions of LEGO light sensors and printed Technic discs, which are valuable for collectors interested in the history of LEGO technology.

🛒 Where to Buy

eBay

✓ In Stock

$7.99 →

BrickLink

✓ In Stock

$10.85

Amazon

Check price

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💎 Notable Parts

White Technic Disc 3 x 3 with 4 Black Sections on One Side and 8 on Reverse Print [Speed Sensor] (2x) $1.50

Black Sensor, Light, 4.5V (2x) $4.00

Est. BrickLink Part Value

$5.50

💡 MOC Potential

🤖 Simple light-activated robots

🚗 Add light-sensing capabilities to basic vehicle designs

🏙 Create interactive city features like traffic lights

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Inventory Statistics

Unique Parts

Total Pieces

Minifigures

Inventory Version: 1

Sense the 80s!Technic Optosensors are back!