> **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

# IR Break Beam Sensor (50cm)

**Type:** Product page · **SKU:** SEN0503 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/ir-break-beam-sensor-50cm.html ([markdown](https://core-electronics.com.au/ir-break-beam-sensor-50cm.html.md))

Infrared break-beam sensors are a simple way to detect motion. This IR break beam sensor works up to 50cm with a fast and stable response of <2ms...

## Pricing

- **Price:** $8.45 (inc GST) — $7.68 AUD, exc GST
- **Quantity discounts:** 6+ $7.30 (exc GST) · 12+ $6.99 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 13 today, and up to 500 more in 8–12 days.

## How to buy

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## Description

Infrared break-beam sensors are a simple way to [detect motion](https://core-electronics.com.au/catalogsearch/result/?q=motion+detector).

This IR break beam sensor works up to 50cm with a fast and stable response of <2ms. With a small size of 20\*10\*9mm, the module can be conveniently installed in a narrow space. Besides, it can operate within a temperature of -25°C to 60°C.

Power the sensor by a voltage of DC 3.0~5V. It can be used with Arduino for some simple motion detection, speed detection, timing, etc. in smart robot competitions.

![IR Break Beam Sensor - 50cm](https://core-electronics.com.au/attachments/localcontent/1_36780c13f8c.png)

They work by having an emitter side that sends out a beam of human-invisible IR light, then a receiver across the way which is sensitive to that same light. When something passes between the two, and it’s not transparent to IR, then the “beam is broken“. The voltage level on the output (white wire) will match the supply voltage of the receiver whenever it has a clear view of the detector. Breaking the beam causes the signal on the output to drop to zero volts.

![IR Break Beam Sensor - 50cm](https://core-electronics.com.au/attachments/localcontent/2_12384fc88cc.jpg)

#### Features

- Fast and stable response speed
- Can be conveniently installed in a narrow space
 
#### Applications

- Simple motion detection
- Speed detection
- Timing
 
#### Specification

- Induction Distance: 50CM / (5V), 20CM / (3.3V)
- Induction Method: through-beam type (non-transparent)
- Working Voltage: DC 3.0 V-5V
- Working Current: 25mA
- Output Mode: NPN normally open
- Output Current: 100mA (can directly drive the relay)
- Emitting Angle: straight line (infrared light)
- Receiving Angle: <10°
- Response Time: 2ms
- Working Temperature: -25°C ~ 60°C
- Working Environment: indoor (not waterproof)
- Dimensions: 20\*10\*9mm (L\*W\*H)
- Cable Length: 25cm / 9.84 inch
- Light Hole: 3MM / 0.12 inch
- Transmitter: red wire=5V DC, black wire=GND
- Receiving: red wire =5V DC, black wire=GND, white wire=OUT (NPN)
 
#### Parts List

- IR Break Beam Sensor (50cm) - Receiver x1
- IR Break Beam Sensor (50cm) - Transmitter x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_2391.jpg)