---
product_id: 111044958
title: "HOBO MX2302A Weatherproof Bluetooth Temperature and Humidity Data Logger w/External Sensor"
brand: "onset"
price: "£249.81"
currency: GBP
in_stock: true
category: "Onset"
url: https://www.desertcart.co.uk/products/111044958-hobo-mx2302a-weatherproof-bluetooth-temperature-and-humidity-data-logger-w
store_origin: GB
region: United Kingdom
---

# Humidity range 0-100% RH with 2.5% precision Bluetooth Smart LE wireless sync Accurate ±0.2°C temp range -40°C to 70°C HOBO MX2302A Weatherproof Bluetooth Temperature and Humidity Data Logger w/External Sensor

**Brand:** onset
**Price:** £249.81
**Availability:** ✅ In Stock

## Summary

> 🌦️ Stay ahead of the elements with precision data at your fingertips!

## Quick Answers

- **What is this?** HOBO MX2302A Weatherproof Bluetooth Temperature and Humidity Data Logger w/External Sensor by onset
- **How much does it cost?** £249.81 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/111044958-hobo-mx2302a-weatherproof-bluetooth-temperature-and-humidity-data-logger-w)

## Best For

- onset enthusiasts

## Why This Product

- Trusted onset brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Long-Lasting Power:** User-replaceable lithium battery offers up to 2 years of continuous operation at 1-minute sampling intervals—set it and forget it.
- • **Ready-to-Mount Kit:** Includes external sensor, screws, and zip ties for quick, secure installation—get up and running without delay.
- • **Precision You Can Trust:** High-accuracy sensors deliver ±0.2°C and 2.5% RH measurements, empowering confident data-driven decisions.
- • **Rugged Weatherproof Design:** Built to withstand harsh outdoor environments, ensuring reliable temperature and humidity tracking rain or shine.
- • **Seamless Mobile Integration:** Instantly access real-time data on your smartphone via Bluetooth Smart LE for effortless monitoring anywhere.

## Overview

The Onset HOBO MX2302A is a weatherproof Bluetooth-enabled temperature and humidity data logger designed for outdoor use. It features an external sensor with a wide measurement range (-40°C to 70°C and 0-100% RH) and high accuracy (±0.2°C, 2.5% RH). Data syncs wirelessly to smartphones via Bluetooth Smart LE, supported by the HOBOmobile app. Powered by a user-replaceable lithium battery lasting up to 2 years, it comes with mounting hardware for easy installation, making it ideal for professionals needing reliable environmental monitoring.

## Description

The HOBO MX2302A is a weatherproof data logger with external temperature and relative humidity sensors. Leveraging Bluetooth Low Energy, the logger enables easy, fast set up and data download directly from your mobile device, and provides high-accuracy measurements in harsh outdoor environments.

## Features

- External Sensor for Temperature and Humidity Measurements in an Outdoor Environment
- Wireless Transmission of Recorded Readings to Smartphones or Tablets Using Bluetooth Smart LE Communications
- 0 to 100% RH and -40°C to 70°C Measurement Ranges with a 2.5% RH and ±0.2°C Accuracy
- User-Replaceable Lithium Battery with 2 Year Typical Life (1 Minute Sampling Rate)
- Includes Temp/RH Sensor, Screws and Zip Ties for Mounting. HOBOmobile App Available on the Apple Store

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07P97KXF1 |
| Batteries | 1 AA batteries required. |
| Best Sellers Rank | #439,995 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #188 in Industrial Data Loggers |
| Date First Available | March 30, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.01 ounces |
| Item model number | MX2302A |
| Manufacturer | Onset Computer |
| Product Dimensions | 4.25 x 0.88 x 2 inches |

## Images

![HOBO MX2302A Weatherproof Bluetooth Temperature and Humidity Data Logger w/External Sensor - Image 1](https://m.media-amazon.com/images/I/31m71MMYQuL.jpg)

## Frequently Bought Together

- Onset HOBO MX2302A Weatherproof Bluetooth Temperature and Humidity Data Logger w/External Sensor
- Onset RS3-B Solar Radiation Shield

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-30*