SPECIFICATIONS

BME680:

The BME680 is a low-power gas, pressure, temperature and humidity sensor. The BME680 is a digital 4-in-1 sensor that measures gas, humidity, pressure and temperature based on proven sensing principles. This sensor module is encapsulated in an extremely compact metal cover LGA package, occupying an area of only 3.0x3.0 square millimeters and having a maximum height of 1.00 millimeters (0.93±0.07 millimeters). Its small size and low power consumption enable it to be integrated into battery-powered or frequency-coupled devices, such as mobile phones or wearable devices.

Typical applications:

Indoor air quality Home automation and control Internet of Things Weather forecast GPS enhancement (for example, improvement of the first positioning time, estimated ranging, slope detection); Indoor navigation (floor change detection, elevator detection) Vertical speed indication (ascending/descending speed) for outdoor navigation, leisure and sports applications.

BME688:

The BME688 environmental sensor is a highly integrated MEMS environmental sensor capable of comprehensively measuring environmental parameters such as temperature, humidity, air pressure, and VOC gases (volatile organic compounds). Its software protocol and hardware size are fully compatible with BME680, so it can directly replace the BME680 in the existing system without any adjustment. Meanwhile, BME688 has enhanced the accuracy of temperature measurement and has hollowed out the area around the chip on the circuit board to reduce the impact of heat generated by external components on the measurement.

Another major improvement of BME688 is the introduction of a "heating layer" technology at the bottom of the chip. Traditional VOC sensors are prone to interference from ambient temperature, leading to measurement errors. However, the heating layer of BME688 enables users to precisely control the sensor's temperature, thereby reducing the impact of ambient temperature on VOC measurement. By taking advantage of this feature, users can also collect the response data of specific composite gases at different temperatures by adjusting the temperature of the heating layer.

It is widely applied in fields such as consumer electronics, medical care, automobiles, industry, meteorology, etc., for instance: household appliances like HVAC, dehumidifiers and refrigerators, testing and inspection equipment, and other related temperature and humidity detection and control products.