Analogical Acoustic Sensor 4-Pin Microphone Sound Detector Module

Connectors BLS01 Female/Female 1 Pin RoHS Single Row pack 20pcs features:
- Number of connections: 1 in a single row
- Type: female / female
- RoHS standard

With the Smart City Kit you will learn more about the IoT, the software, and the possibilities of future city scenes that are able to be built through it. You will be able to build topics such as smart parking, transport network, river level monitoring...

The MAX9812 is a sound amplifier specially designed to treat the signal coming from microphones.
We can use it together with Arduino to measure sound from a processor like Arduino.
When we saw the modules with microphone we commented that, in general, the signal generated is too low to be registered correctly.
If we want to be able to measure sounds, we will have to amplify the signal. The MAX9812L has single / dual inputs, fixed gain of 20dB, bandwidth of 400 kHz, low noise and low signal distortion 0.015% THD.
There are two models, its supply voltage is 2.7V to 3.6V.
We can use the sensors with MAX9812 for applications that require measuring the intensity or frequency of the sound.

Heat Shrinkable Tube 5 Colors 3 Meters Package features:
- Heat shrink tubing is used to connect electrical cables, isolate resistor and capacitor points, mark and protect cables Electrical, protect metal bars or tubes against corrosion and protect antennas.
- These heat shrink tubes are very flexible and of high quality. Made in EU
- Different sizes of 20 cm each are delivered:
* 1,6mm: black, brown, red, yellow, orange
* 2,4mm: black, brown , red, yellow, blue
* 3,2mm: black, brown, red, yellow, blue
- Quantity: 15 units
- Material: polyolefin
- Shrinkage ratio: 2: 1 (maximum reduce to 1/2 of its supplied diameter)
- Minimum shrinkage temperature: 115 ° C maximum 200 ° C

Resistencias (5.6k Ohm) de tolerancia de 5%  y potencia de 0,5W. En el carbon film.

SONOFF DUALR3 is a WiFi based 2-gang switch that can independently connect and control two connected devices or lights - this simply means that 1 SONOFF DUALR3 control switch is equivalent to 2 Sonoff basic switches! The three working modes of DualR3 are switch mode, motor mode and meter mode.

Female Strip 40 Short Pins features:
- Pin spacing: 2.54mm
- Insert position: Vertical
- Insert: Pasante
- Quantity: 1 unit of strips of 40 female pins each

MQ-8 Hydrogen Gas Sensor Module features:
- Main chip: MQ-8 methane sensor and comparator LM393
- Working voltage: 5V
- Current: 150mA
- Digital output: TTL 0/1
- Analog output: analog voltage sensing value
- Quick response features:
- Detection concentration:
  100ppm- 10000ppm hydrogen H2
- Adjustable sensitivity with the potentiometer
- Size: 32mm x 20mmx 18mm