Temperature & Environmental


The dust sensor module DSM501A is low cost,compact size for a particle density sensor. 

  • Quantitative particle measurement with the principle of particle counter.
  • FIne particle of which diameters are bigger than one micron could be detected with high sensitivity.
  • Inside heater realizes the self-air taking.
  • One control contact and two output contacts.

The DSM501A consists of:

  • Light Emitting Diode(LED) Lamp
  • Detector
  • Signal amplifier circuit
  • Output drive circuit 1
  • Output drive circuit 2
  • Heater


  • PWM output
  • Compact size and lightweight
  • Easy installation
  • Single power supply


  • Air cleaner or Air purifier
  • Air condition
  • Air quality monitor
  • Ventilator etc.


MLX90615 Digital Infrared Temperature Sensor GY-90615

Wide Temperature Detecting Range
   -40 to 85°C for sensor temperature
   -40 to 115°C for object temperature
High accuracy of 1°C over wide temperature
Measurement resolution of 0.02°C
Embedded emissivity compensation
Power saving mode
Power supply:3v-5v
Size:10.5*13*9.6 mm
Current:1ma ... 

Documents: https://www.adrive.com/public/XBdCUR/FZ1688-GY90615.rar


Hall Effect Hall Switch Sensor Magnetic feild sensor module

Singal output:digital singal output

5V: postive
Out: power output, it can connect with IO interface

Package Included:
1 X Hall Sensor


100K ohm NTC 3950 1% Thermistor For 3D Printer

Head size:1.8mm
Resistance and precision R25: 100kΩ ± 1% (at25 ℃)
B value and accuracy B25 / 85: 3950K ± 1%
Dissipation factor: 2 mW / ℃ (in air)
Thermal time constant: 12 s (in air)
Power Rating: 2.5 mW (at 25 ℃)
Operating temperature: -40 ~ 250 ℃

Package Included:
1 x 100Kohm NTC Thermistor

Piezo Vibration Sensor

Description: This basic piezo sensor from Measurement Specialties is often used for flex, touch, vibration and shock measurements. A small AC and large voltage (up to +/-90V) is created when the film moves back and forth. A simple resistor should get the voltage down to ADC levels. Can also be used for impact sensing or a flexible switch.

Comes with solderable crimp pins.


  • Flexible PVDF Piezo Polymer Film
  • Wide dynamic range
  • Laminated for higher voltage output
  • 0.1" breadboard friendly leads


Reed Switch 2*14MM

The FLEX-14 reed switch is a sub-miniature, normally open switch with a 14.00mm long x 2.28mm diameter (0.551” x 0.090”) glass envelope, flexible, easily formed leads, capable of switching 200Vdc at 10W...

Datasheet:  http://www.littelfuse.com/~/media/electronics/datasheets/reed_switches/littelfuse_reed_switches_flex_14_datasheet.pdf.pdf

- See more at: http://www.ewallpk.com/home/1221-reed-switch-214mm.html?search_query=A1112&results=1#sthash.03jVofpa.dpuf

HDC1008 Temperature Humidity Sensor Module


This I2C digital humidity sensor is a fairly accurate and intelligent alternative to the much simpler Humidity and Temperature Sensor - SHT15 Breakout It has a typical accuracy of ±4% with an operating range that's optimized from 10% to 80% RH. Operation outside this range is still possible - just the accuracy might drop a bit. The temperature output has a typical accuracy of ±0.2°C from -20~85°C.

The HDC1008 sensor chip has 2 address-select pins, so you can have up to 4 shared on a single I2C bus. It's also 3-5V power and logic safe so you don't need any level shifters or regulators to use with a 5V or 3V microcontroller.

Such a lovely chip, but only available in a tiny BGA package. So we spun up a breakout board with the chip and some extra passive components to make it easy to use. Each order comes with one fully assembled and tested PCB breakout and a small piece of the header. You'll need to solder the header onto the PCB but it's fairly easy and takes only a few minutes even for a beginner.

Please note: TI has indicated that there's a 'settling' effect for the humidity and that you will need to re-hydrate the sensor once you receive it. To rehydrate it, place it in a location with 85% humidity for 24 hours or 60% humidity for 10 days.

Dimensions: 18mm x 15mm x 2mm / 0.7" x 0.6" x 0.1"
Power: 3-5VDC
Logic: 3-5VDC
Uses I2C address 0x40, 0x41, 0x42 or 0x43

Power Pins:
Vin - this is the power pin. Unlike many sensors, this chip can be powered by 3-5 VDC, so there is no voltage regulator on board. Simply power the board with the same power as the logic level of your microcontroller - e.g. for a 5V micro like Arduino, use 5V. For a 3V ARM processor, use 3V
GND - common ground for power and logic
I2C Logic pins:
SCL - I2C clock pin, connect to your microcontrollers I2C clock line. 3-5V logic OK
SDA - I2C data pin, connect to your microcontrollers I2C data line. 3-5V logic OK
Optional Pins
These are pins you don't need to connect to unless you want to!
RDY - This is the interrupt/'ready' pin from the HDC100x. The chip has some capability to 'alert' you when data is ready to be read from the sensor. We don't use this pin in our library but it's available if you need it! It is an open collector so you need to use a pull-up resistor if you want to read signal from this pin.
A0 A1 - These are the address select pins. Since you can only have one device with a given address on an i2c bus, there must be a way to adjust the address if you want to put more than one HDC100X on a shared i2c bus. The A0/A1 pins set the bottom 2 bits of the i2c address. There are pull-down resistors on the board so connect them to Vin to set the bits to '1'. They are read on power up, so de-power and re-power to reset the address

Analog pH Sensor/ Meter Kit

Need to measure water quality and other parameters but haven't got any low cost pH meter? Find it difficult to use with Arduino? Our analog pH meter, specially designed for Arduino controllers and has convenient and practical connector and a bunch of features. Instant connection to your probe an your Arduino to get pH measurements at ± 0.1pH (25 ℃).


Need to measure water quality and other parameters but haven't got any low cost pH meter? Find it difficult to use with Arduino? Our analog pH meter, specially designed for Arduino controllers and has convenient and practical connector and a bunch of features. Instant connection to your probe an your Arduino to get pH measurements at ± 0.1pH (25 ℃). For most hobbyist this great accuracy range and it's low cost makes this a great tool for biorobotics and other projects! It has an LED which works as the Power Indicator, a BNC connector and PH2.0 sensor interface. To use it, just connect the pH sensor with BND connector, and plug the PH2.0 interface into the analog input port of any Arduino controller. If pre-programmed, you will get the pH value easily. Comes in compact plastic box with foams for better mobile storage.

Build your own PH meter gadjet, or a water monitoring station for your water tanks. This and our other water sensor devices could make for the ultimate water control device. Use it for your  aquaponics or fish tanks or other materials that need measurements. 


Note: buffer solutions are not included.




  • Water quality testing
  • Aquaculture




  • Module Power : 5.00V
  • Module Size : 43 x 32mm
  • Measuring Range :0 - 14PH
  • Measuring Temperature: 0 - 60 ℃
  • Accuracy : ± 0.1pH (25 ℃)
  • Response Time : ≤ 1min
  • pH Sensor with BNC Connector
  • pH2.0 Interface ( 3 foot patch )
  • Gain Adjustment Potentiometer
  • Power Indicator LED




  • pH probe (BNC connector)  x1
  • pH sensor circuit board       x1
  • Analog cable                      x1

Carbon Monoxide Gas Sensor Module


MQ-9 sensitive material used is a gas sensor in a clean air, the lower the conductivity of tin dioxide (SnO2). Detection method using low temperature cycling (1.5V heating) to detect carbon monoxide, the conductivity of the sensor increases with the increase of carbon monoxide in air gas concentration, stray adsorbed at high temperatures (5.0V heating) detection of combustible gases methane, propane and clean low gas. Using a simple circuit to the change in conductivity, and the concentration of the gas is converted to the corresponding output signal. MQ-9 gas sensor high for carbon monoxide, methane, liquefied petroleum gas sensitivity of this sensor can detect a variety of carbon monoxide and combustible gases, is a low-cost sensors for a variety of applications. 

Module Features:

Using high-quality dual-panel design, with power indicator and a TTL signal output instructions;

DO switching signal having (TTL) output and analog output AO;

TTL output valid signal is low. (When output low signal light, can be directly connected microcontroller or relay modules)

Analog output voltage with the higher voltage, the higher the concentration.

For carbon monoxide detector has good sensitivity.

There are four screw holes for easy positioning;

Product Dimensions: 32 (L) * 20 (W) * 22 (H)

Has a long life and reliable stability

Quick response and resume


Electrical properties:

Input voltage: DC5V Power consumption (current): 150mA

DO output: TTL digital 0 and 1 (0.1 and 5V)

AO output: about 0.1-0.3V (relatively clean), the highest concentration of voltage 4V

Special note: After the sensor is energized, needs to warm up around 20S, measured data becomes stable, the sensor fever is a normal phenomenon, because the internal electric wire, if not normal hot


Module Application:

For home or factory gas leakage monitoring devices, monitoring devices suitable for carbon monoxide and combustible gases, carbon monoxide can be tested 10 to 1000ppm CO, combustible gas range 100 to 10000ppm

Package Included:

1  X MQ-9 Module


MQ-5 Methane Gas Sensor

Main chip: LM393, ZYMQ-5 gas sensor
Operating voltage: DC 5 Volt 
Indication of the signal output.
Dual signal output (analog output, and TTL level output)
TTL output signal is low. (When low output signal light, and can be connected directly to the microcontroller)
0 ~ 5V analog output voltage, the higher the concentration, the higher the voltage.
Liquefied petroleum gas, natural gas, city gas, better sensitivity.
Has a long life and reliable stability
Fast response and recovery characteristics  - See more at: http://www.ewallpk.com/home/1287-mq-5-mq5-methane-gas-sensor-shield-detector-module-for-arduino-mega2560-m27.html#sthash.CWhSlbWf.dpuf