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MQ135 Air Quality Gas Sensor
MQ135
Air quality sensor module for Arduino and other microcontroller projects
This module has a sensitive gas sensor that can measure the air quality. It can measure gaseous compounds and elements such as ammonia (NH3), nitrogen oxides (NOx) carbon dioxide (CO2), benzene (C6H6) and other harmful gases. The sensor outputs a varying voltage on the analogue pin depending on the level of pollutants and it has a comparator to give you a digital output when the level of pollutants reaches a certain level. This can be set with the built-in potentiometer.
Please note, this sensor needs to warm up for a couple of minutes before it will give a stable reading.
Voltage : 5VDC
Current : 150mA
Sensitivity : 300 to 10000ppm
Size 32x21mm
|
£3.50
(inc VAT £4.20)
MQ2 Combustible Gas & Smoke Sensor
MQ2
Combustible gas and smoke sensor module for Arduino and other microcontroller projects
This module has a sensitive gas sensor that can measure smoke and various combustible gases. It can measure compunds such as LPG, Propane, Methane and smoke. The sensor outputs a varying voltage on the analogue pin depending on the level of gases present and it has a comparator to give you a digital output when the level of combustible gases reaches a certain level. This can be set with the built-in potentiometer.
Please note, this sensor needs to warm up for a couple of minutes before it will give a stable reading.
Voltage : 5VDC
Current : 150mA
Sensitivity : 300 to 10000ppm
Size 32x21mm
|
£3.50
(inc VAT £4.20)
MR2940 Integrated Circuit (IC)
MR2940
|
IC Input Sensing Partial Resonance Power Supply Controller 7 pins |
£6.50
(inc VAT £7.80)
MRF151 Transistor
MRF151
|
NMOS 211 125V 16A 300W. Typical Output Power 150W @ 175MHz 13dB Genuine Motorol Only one left |
£75.00
(inc VAT £90.00)
£37.50
(inc VAT £45.00)
£27.50
(inc VAT £33.00)
MRF433 Transistor
MRF433
|
NPN 211 18V 2.5A 12.5W@30MHz Transmitting Transisto Genuine Motorola - in it's original blister pack. Only one left |
£55.00
(inc VAT £66.00)
£25.00
(inc VAT £30.00)
£9.00
(inc VAT £10.80)
£15.00
(inc VAT £18.00)
£16.00
(inc VAT £19.20)
