Laser sensor module to identify the intense light from the laser, it is recommended to use in darker environment, sunlight may distort the measurement.
A sensor capable of monitoring the electrical activity of the heart such as heart rate. The module has excellent shielding against external interference and pulse amplification.
The MQ-135 sensor is a popular module for air quality detection. It is used to measure the concentration of various gases in the air, such as ammonia (NH₃), nitrogen oxides...