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Showing 76–90 of 170 results
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Sensor
MQ-135 Air Quality Sensor
- High sensitivity to Ammonia, Sulphide and Benzes
- Stable and Long Life
- Detection Range: 10 – 300 ppm NH3, 10 – 1000 ppm Benzene, 10 – 300 Alcohol
- Heater Voltage: 5 V
- Dimensions: 18 mm Diameter, 17 mm High excluding pins,Pins – 6 mm High
- Long life and low cost
- Domestic air pollution detector
- Industrial air pollution detector
- Portable air pollution detector
SKU: STEM18077 -
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Sensor
MQ-4 Methane Natural Gas Sensor
- Good sensitivity to Combustible gas in wide range
- High sensitivity to CH4, Natural gas
- Small sensitivity to alcohol, smoke
- Oxygen concentration: 21%(standard condition)
- Wide detection range
- Port explanation : DO for digital output, AO for analog output
SKU: STEM18072 -
Sensor
MQ-7 High Sensitivity CO Carbon Monoxide Sensor
- Has better sensitive detection for carbon monoxide, which with lower conductivity in clean air
- High quality double panel design
- Power and TTL signal output indication
- Has a long service life and reliable stability
- Mainly used for SNO2 collection detection in family, factory, underground operation
SKU: STEM18075 -
IOT
Node MCU ( ESP8266)
- Open-source, Interactive, Programmable
- Wi-Fi Module: ESP-12E module with 6 extra GPIOs
- USB: Micro USB port for power, programming and debugging
- Headers: 2 x 2.54 mm 15-pin header with access to GPIOs, SPI, UART, ADC and power pins
- Drive Type: Dual high-power H-bridge
- Flash size: 4 MB
- Transfer rate: 110-460800 kbps
- Miscellaneous: Reset and flash buttons
SKU: STEM18039 -
