# Mijia Bluetooth Temperature/Humidity Sensor with LCD Display

**Type:** Product page · **SKU:** ADA4881 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/mijia-bluetooth-temperature-humidity-sensor-with-lcd-display.html ([markdown](https://core-electronics.com.au/mijia-bluetooth-temperature-humidity-sensor-with-lcd-display.html.md))

Here is a jolly cute, palm-sized, Bluetooth-enabled sensor to monitor your room's temperature and humidity. Only 43mm x 43mm, Adafruit dig its small form factor and minimal design.

## Pricing

- **Price:** $19.90 (inc GST) — $18.09 AUD, exc GST
- **Quantity discounts:** 10+ $17.55 (exc GST) · 50+ $17.18 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 4 today, and up to 500 more in 8–12 days.

## Restrictions

Restrictions apply to this equipment as it uses button/coin cell batteries:

- The equipment is intended to be used in trades, professions or industries
- The equipment is not intended for sale to the general public
- The equipment is not intended to be used where children are present
- You are aware that this equipment may not meet child safety testing requirements as it is not intended to be used by consumers or general public, but rather, is intended to be used in trades, professions or industries in conjunction with the limitations and restrictions listed above
- You are aware that these restrictions are due to a change in [A](https://www.accc.gov.au/media-release/businesses-on-notice-as-mandatory-button-battery-laws-commence)[ustralian legislation in 2022](https://www.accc.gov.au/media-release/businesses-on-notice-as-mandatory-button-battery-laws-commence) for button/coin cell batteries
 
![Button Battery Warning](https://core-electronics.com.au/attachments/uploads/iec-button-battery.png)

A declaration of use will need to be submitted during checkout.

## Description

Here is a jolly cute, palm-sized, Bluetooth-enabled sensor to monitor your room's temperature and humidity. Only 43mm x 43mm, Adafruit dig its small form factor and minimal design.

The shell is made of durable ABS material. Up front you get a 1.5" (28x28mm) LCD display. These sensors are sold to work with the Mijia "Mi Home" App ([iOS](https://apps.apple.com/us/app/mi-home-xiaomi-smarthome/id957323480) and [Android](https://play.google.com/store/apps/details?id=com.xiaomi.smarthome&hl=en_US&gl=US)) and are a low cost way to add environmental sensing up to about 10 meters away.

And while it's totally fine to use it with the Mi app, Adafruit like this more for its use cases in general home automation and sensing projects!

The sensor has two modes. One is advertising modes, where it sends out sensor data every few minutes. The advertisements are encrypted so not easy to read. You can also connect to it as a BLE device and read from the sensor characteristic, which thankfully is not encrypted. You can use this with Adafruit's library library for the [LYWSD03MMC that works with CircuitPython](https://github.com/adafruit/Adafruit_CircuitPython_BLE_LYWSD03MMC). Or [you can also hack it to add your own custom firmware](https://github.com/atc1441/ATC_MiThermometer) to remove the encryption on advertisements. [You can also use these with ESPHome / Home Assistant by extracting the binding key](https://esphome.io/components/sensor/xiaomi_ble.html).

Comes with 1 x [CR2032 coin cell battery](https://core-electronics.com.au/coin-cell-battery-20mm-cr2032.html) and a back adhesive sticker, so you can mount the sensor anywhere you please.

**Technical Details**

- Temperature range: 0ºC - 60ºC
- Humidity range: 0% - 99% RH
- Product Dimensions: 43.0mm x 43.0mm x 12.5mm / 1.7" x 1.7" x 0.5"
- Product Weight: 21.0g / 0.7oz

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/4/8/4881-01.jpg)