Material: PVC rubber
Cable Length : 305M (approx) 30AWG
Core Wire Diameter : 0.25mm
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The DHT11 is a relatively cheap sensor for measuring temperature and humidity.
The HC-SR04 ultrasonic sensor uses sonar to determine distance to an object like bats or dolphins do.
The Vibration module based on the vibration sensor SW-420 and Comparator LM393 to detect if there is any vibration that beyond the threshold. The threshold can be adjusted by the on-board potentiometer.