> **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

# Weatherproof Ultrasonic Sensor with Separate Probe

**Type:** Product page · **SKU:** SEN0208 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/weatherproof-ultrasonic-sensor-with-separate-probe.html ([markdown](https://core-electronics.com.au/weatherproof-ultrasonic-sensor-with-separate-probe.html.md))

Need something to sense distance, but you're expecting things to get a bit wet? Well look no further! This sensor can stretch all the way out to 4.5m in ideal conditions, with a resolution of 0.5cm...

## Pricing

- **Price:** $26.85 (inc GST) — $24.41 AUD, exc GST
- **Quantity discounts:** 6+ $23.19 (exc GST) · 12+ $22.21 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 24 and Aug 28.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0208:1` (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/SEN0208:1.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

Need something to sense distance, but you're expecting things to get a bit wet? Well look no further! This sensor can stretch all the way out to 4.5m in ideal conditions, with a resolution of 0.5cm. You see sensors like these often on systems like car reversing sensors, security alarms, and industrial processes. We have found that the output of this sensor can be a little noisy. To sacrifice accuracy and speed for cleanliness of output, the example code below features a simple smoothing function that will tame the output somewhat if desired. Note also that when designing or 3D printing around this sensor, the cable leaving the rear of the sensor itself is not concentric, with the surrounding housing.

**Specifications**

- Operating Voltage: 3.3-5V
- Idle Current: 8mA
- Active Current: 40mA
- Operating Range: 25cm - 4.5m
- Resolution: 0.5cm
- Field of View: 75°
- Operating Temperature: -20 ~ 70°C
- Cable Length: 2.5m
- Dimentsions: 41mm x 28.5mm
- Weight: 54g
 
**Documents and Resources**

- [Wiki](https://wiki.dfrobot.com/Weatherproof_Ultrasonic_Sensor_With_Separate_Probe_SKU_SEN0208)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/s/e/sen0208_1.jpg)