Magnetic Buzzer 5V 12mm 2 Pin The 5V 12mm Magnetic Buzzer is a compact audio signaling component designed to generate clear beep

Description This is an easy to use digital soil moisture sensor. Just insert the sensor in the soil and it

This Normally open vibration sensor module is for a variety of vibration trigger functions, reported theft alarm, smart car, electronic building blocks, and so on. When the product does not shake, the vibration switch is held in off state, the output is high and the green light does not shine and when the product vibrates, the vibration switch goes into momentary conduction mode, the output end of the output goes low and the green indicator light-up. Please note that Normally open vibration sensor module in the induction of a small vibration when the trigger time is very short, not enough to drive the relay, some of the information display can be directly connected to the relay module, the actual use of ineffective. Output can be directly connected to the microcontroller through the microcontroller to detect high and low levels, thus to detect whether there is a vibration of the environment, play an alarming role.

TCRT5000 Reflective Optical Sensor – Precision Line Following and Object Detection​ The digital output allows connection of the sensor to any board

TEC1-12706 40*40 12V6A 12706 TEC Thermoelectric Cooler Peltier Thermoelectric coolers (TEC or Peltier) create a temperature differential on each side. One side gets hot and the other side gets cool. Therefore, they can be used to either warm something up or cool something down, depending on which side you use. You can also take advantage of a temperature differential to generate electricity.