# Shelly Temperature Sensor (3M)

- Canonical URL: https://www.netxl.com/sensors-and-detectors/shelly-temperature-sensor-3m/
- Brand: Shelly
- SKU / part number: TEMP-SENSOR-DS18B20-3M
- EAN (GTIN-13): 3800235266403
- Category: Sensors & Detectors (https://www.netxl.com/sensors-and-detectors/)

## Pricing (GBP, guest pricing — trade customers see account pricing via the API)
| Quantity | ex VAT | inc VAT |
| --- | --- | --- |
| 1+ | £5.61 | £6.73 |
| 5+ | £5.61 | £6.73 |
| 10+ | £5.61 | £6.73 |

## Availability and shipping
- Availability: Out of stock
- Shipping: Royal Mail Tracked - Next Working Day — £7.19, 1 working day(s)

## Description

The Shelly Temperature Sensor (3M) is a temperature sensor add-on, providing precise celsius temperature measurements, as well as a built-in customisable alarm function.

Designed for use with the Shelly Add-On,, the Shelly Temperature Sensor offers 9-bit to 12-bit celsius temperature measurements, requiring only one data line (and a ground) to function. It also includes an alarm function if temperatures fall outside acceptable levels, and is IP67 rated for both dust and waterproofing.

Applications for the temperature sensor range from HVAC environmental controls, to measuring temperature inside buildings, equipment, or machinery.

Also available in 1M!

## What's in the box

- DS18B20-3M

## Specifications

| Specification | Value |
| --- | --- |
| Power Supply | 240V |
| Connectivity | WiFi |
| Purpose | Temperature Control |
| Product Series | Sensor |

## Variations

- [1 Metre](https://www.netxl.com/sensors-and-detectors/shelly-temperature-sensor-1m.md)
- [3 Metre](https://www.netxl.com/sensors-and-detectors/shelly-temperature-sensor-3m.md)

## Programmatic access

- This page in HTML: append a trailing slash instead of `.md`
- NetXL Customer API (real-time customer pricing, stock, ordering): https://api.netxl.com — OpenAPI at https://api.netxl.com/openapi.yaml
- MCP server for AI agents: https://mcp.netxl.com
- Machine-readable site index: https://www.netxl.com/llms.txt
- API documentation: https://www.netxl.com/api-docs.md