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TDS sensor kit is compatible with Arduino controllers, plug and play, easy to use. It can be applied to measure TDS value of the water, to reflect the cleanliness of the water.
Eye blink Sensor is a relatively simple sensor used to detect eye blinks.This one completely "ZerOne Tech" own developed sensor intended for student experiments and projects.
This Water Sensor water level sensor is an easy-to-use,cost-effective high level/drop recognition sensor.It has a series of parallel exposed traces to measure droplets/water volume.
This is the Rain Sensor Module is based on the LM393 op amp.t includes the electronics module and a printed circuit board that “collects” the rain drops.
MAX30102 is an integrated pulse oximetry and heart-rate monitor module. It includes internal LEDs,photodetectors,optical elements,and low-noise electronics with ambient light rejection.