Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Microcontroller | Nordic nRF52810 |
| Wireless Protocol | Bluetooth 5.0 BLE |
| Temperature Sensor | Sensirion SHT40 |
| Motion Sensor | 3-Axis Low-Power Accelerometer |
| Power Source | CR2032 Coin Cell Battery |
| Operating Temperature | -40°C to +85°C |
| Humidity Accuracy | ±1.8% RH |
| PCB Dimensions | 25mm x 25mm |
| Programming Interface | SWD Header |
| Firmware Support | Customizable Open Source |
Anonymous
Apr 15, 2026
Rating: 4/5
Good accuracy
Temp readings are spot on compared to my calibrated thermometer. Humidity seems slightly off but acceptable for DIY projects.
Anonymous
Mar 14, 2026
Rating: 5/5
Excellent DIY Module
Easy to flash custom firmware using the SWD header. The accelerometer data is useful for detecting movement events.
Anonymous
Mar 08, 2026
Rating: 5/5
Great for Home Assistant
Works perfectly with my ESP32 gateway. The temperature readings are consistent and the BLE signal is strong enough for my living room setup.
Anonymous
Feb 21, 2026
Rating: 5/5
Perfect for IoT
Compact and reliable. I bought five of these for monitoring different rooms. The SHT40 is a significant upgrade over cheaper sensors.
Anonymous
Feb 20, 2026
Rating: 3/5
Battery drains fast
Good sensor but battery life varies depending on advertising interval settings. Need to optimize code for long-term use.
Q: What is the BLE range?
A: Typically up to 50 meters in open space, but walls and interference will reduce this range.
Q: Is it waterproof?
A: The module itself is not waterproof. You will need to enclose it in a case for outdoor or humid environments.
Q: Can I change the advertising interval?
A: Yes, since it is customizable, you can modify the firmware to adjust the BLE advertising interval to save power.
Q: What battery does it use?
A: It uses a standard CR2032 coin cell battery, which is easily replaceable.
Q: Does it work with iOS?
A: Yes, any BLE scanner app on iOS can detect the sensor, or you can write a custom app using CoreBluetooth.
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