> **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

# I2C Temperature & Humidity Sensor (Stainless Steel Shell)

**Type:** Product page · **SKU:** SEN0546 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/i2c-temperature-humidity-sensor-stainless-steel-shell.html ([markdown](https://core-electronics.com.au/i2c-temperature-humidity-sensor-stainless-steel-shell.html.md))

The I2C Temperature & Humidity Sensor (Stainless Steel Shell) adopts 304 stainless steel for its housing to ensure good impact resistance, heat...

## Pricing

- **Price:** $12.30 (inc GST) — $11.18 AUD, exc GST
- **Quantity discounts:** 6+ $10.62 (exc GST) · 12+ $10.17 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 4 today, and up to 1100 more in 8–12 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0546:1` (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/SEN0546:1.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

This I2C digital temperature & humidity sensor offers high accuracy of ±3.0RH% for humidity and ±0.5°C for temperature and features a user-programmable humidity & temperature alarm function.

Its housing is made of 304 stainless steel to ensure good impact resistance, heat resistance, low temperature, and chemical resistance. The sensor output is designed as DuPont 2.54 connector for easy wiring. Also, there are two built-in 4.7K pull-up resistors and one 100nF filtering capacitor so the sensor can be directly used with microcontrollers like Arduino.

This temperature & humidity sensor can be applied to electronic, medical, automotive, industrial, weather, and other fields, including home appliances like HVAC, dehumidifiers and refrigerators, testing & inspection equipment, and other relevant temperature & humidity measurements and controls.

**![](https://core-electronics.com.au/attachments/localcontent/pinout_393623d5249.png)**

**Pinout**

**![](https://core-electronics.com.au/attachments/localcontent/Connection-Diagram(1)_55839b82ecf.png)**

**Connection Diagram**

###  Features

9. 304 stainless steel, good impact resistance
10. Low power consumption, high accuracy
11. User-programmable temperature & humidity alarm response address (ARA)
###  Applications

13. HVAC
14. Dehumidifiers and refrigerators
15. Testing & inspection equipment
16. Other relevant temperature & humidity measurements and controls
###  Specification

18. Operating Voltage: 2.5V~5.5V
19. Standby Current: 0.05uA (Typical), 0.3uA (Max)
20. Average Operating Current: 1.5uA (Typical), 3.0uA (Max)
21. Temperature Measurement Range (°C): -40°C ~ 125°C
22. Temperature Measurement Accuracy (°C): ±0.5°C@0°C~50°C
23. Humidity Measurement Range (%RH): 0%RH~100%RH
24. Humidity Measurement Accuracy (%RH): ±3.0%RH@20%RH~80%RH
25. Communication: I2C
26. Connector: DuPont 2.54
27. Reserved DuPont Wire Length: 5cm
28. Wire Length: 1.5m
29. Housing: 304 stainless steel
30. Wire Sequence: red VCC; black GND; white SCL; yellow SDA
###  Documents

32. [Product wiki](https://wiki.dfrobot.com/SKU_SEN0546_I2C_Temperature_and_Humidity_Sensor_Stainless_Steel_Shell)
33. [Datasheet](https://core-electronics.com.au/attachments/localcontent/4c8e1057e1c118e5c72f8ff6147575db_12091dab6e1.pdf)
34. [STM32\_cht8305](https://core-electronics.com.au/attachments/localcontent/9457bdc12a25d882e94470b822282dda_225323289fc.rar)
###  Parts List

36. I2C Temperature & Humidity Sensor (Stainless Steel Shell) x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN0546-1.jpg)