> **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

# Digital IR Proximity Sensor (0-200cm)

**Type:** Product page · **SKU:** SEN0381 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/digital-ir-proximity-sensor-0-200cm.html ([markdown](https://core-electronics.com.au/digital-ir-proximity-sensor-0-200cm.html.md))

This is a digital IR Proximity Sensor with button and indicator. It provides adjustable detection distance within 0 to 200cm and comes with real-time status feedback...

## Pricing

- **Price:** $21.70 (inc GST) — $19.73 AUD, exc GST
- **Quantity discounts:** 6+ $18.75 (exc GST) · 12+ $17.95 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 400 more in 8–12 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0381:1` (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/SEN0381:1.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

This is a digital IR Proximity Sensor with button and indicator. It provides adjustable detection distance within 0 to 200cm and comes with real-time status feedback. Press down the button, then the indicator starts to flash, this time the detection distance can be adjusted. The sensor will auto detect and save the distance between it and obstacles ahead. In addition, this sensor is equipped with 3PIN data cable (digital signal output) that can be directly plugged into an [Arduino](https://www.dfrobot.com/topic-277.html) IO expansion board. The product can be widely used in applications like smart home, house security, intelligent detection and control, robot obstacle, and so on.

The sensor is based on the principle of diffuse reflection of IR light on objects. When a person or object enters the sensing range in front of the sensor, the sensor immediately determines that there is induction, so as to control the output signal; after the person or object leaves the sensing range, it will judge that there is no induction, and stop signal output, by which intelligent control can be achieved.

![SEN0381-desc-1](https://core-electronics.com.au/media/wysiwyg/SEN0381-desc-1.jpg)

![](https://core-electronics.com.au/media/wysiwyg/product_images/sen0381.png)

### Features

- Wide range of applications
- Onboard button for detection distance adjustment
 
### Specification

- Power Supply: 5V
- Detection Distance: 0~200cm(adjustable)
- Output: switch quantity(active-high)
- Detection Angle: 30-40°coning angle
- Detection Mode: active
- Operating Temperature: -10~60°C
- Storage Temperature: -20°~70°C
- Waterproof Performance: IP67
- Output Pullup: ~10K (pull this down with an 18K resistor if you're using this with a 3.3V micro)
 
### Documents

- [Product wiki](https://wiki.dfrobot.com/Digital_IR_Proximity_Sensor_0_200cm_SKU_SEN0381)
 
### Shipping List

- Digital IR Proximity Sensor(0-200cm) x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/s/e/sen0381-1.jpg)