> **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

# SST Liquid Level Sensor

**Type:** Product page · **SKU:** SEN-13835 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/sst-liquid-level-sensor.html ([markdown](https://core-electronics.com.au/sst-liquid-level-sensor.html.md))

## Retired product

This product is retired and no longer available for purchase. Search the catalogue for an alternative.

## How to buy

- **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 SST Liquid Level Sensor provides single point liquid detection via a TTL compatible push/pull output. This optical liquid level sensor features a miniature design that allows for installation in areas where space is limited. Thanks to its minimal solid state design, this sensor has been built without moving or mechanical parts that can be jammed and stop working.

An infra-red LED and phototransistor accurately positioned at the base of the sensing tip ensure good optical coupling between the two when the sensor is in air. When the sensing tip is immersed in liquid, the infra-red light escapes from the cone, causing a change in the amount of light present at the phototransistor, which makes the output change state.

Features:

- Supply Voltage: +4.5 Vdc to +15.4Vdc
- Output Current: 100mA
- Temperature Range: -25 to +80⁰C
- Polysulphone Housing Tip
- M12 threaded connector (mounted from outside)
 
Document:

- [Datasheet](https://cdn.sparkfun.com/datasheets/Sensors/Infrared/DS0032_11_OptomaxSTDigitalLLDataSheet.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/s/e/sen-13835-01.jpg)