- Qingping 'Temp & RH Barometer Pro S' CGP1W are alarm clock with hygrometers and pressure sensor
- Has onboard clock and alarm
- Has sensors to relay temperature, humidity and air pressure
- Uses Bluetooth Low Energy (BLE) and has a limited range
- An internal 18650 battery is used as power source
- Read real-time sensor values
- Read historical sensor values
- Temperature temperature, humidity and air pressure sensors
The device uses BLE GATT for communication.
Sensor values are immediately available for reading.
The basic technologies behind the sensors communication are Bluetooth Low Energy (BLE) and GATT. They allow the devices and the app to share data in a defined manner and define the way you can discover the devices and their services. In general you have to know about services and characteristics to talk to a BLE device.
Bluetooth payload data typically uses little-endian byte order.
This means that the data is represented with the least significant byte first.
To understand multi-byte integer representation, you can read the endianness Wikipedia page.
The name advertised by the devices is Qingping Temp RH Barometer.
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CGP1W broadcast temperature, humidity, air pressure and battery over service data with the 0xFDCD 16 bits service UUID.
Check out the Qingping protocol page to get more information on advertisement data for this device.
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MIT