Name: VS-401T
Brand: Shenzhen Senseiot
SKU: VS-401T
Availability: OutOfStock

规格

Product Introduction

The VS-401T Indoor Air Quality Gas Sensor is a high-performance sensor designed for monitoring indoor air quality. It is highly sensitive to low concentrations of air-contaminating gases, including secondhand smoke, carbon monoxide, alcohol, cosmetics volatiles, acetone, thinner, insecticide, correction fluid, benzene, and formaldehyde. The sensor is composed of nano-SnO2 materials doped with a catalyst, featuring a ceramic tube structure. When contaminating gases are present, the sensor's resistance decreases proportionally to the gas concentration. When the air is refreshed, the resistance returns to its original state. This sensor is ideal for smart air purification systems and Internet of Things (IoT) applications, enabling automatic ventilation and air quality control in various indoor environments.

Features

Low power consumption
Very sensitive to low concentration of contaminating gas
Long life time, low cost
Small size
Easy to be used in electric circuit

Applications

Automatic air refreshing module in air conditioner
Exhaust fan or ventilating instrument automatic management
Perfume sprayers
Air purifier, plasma purification machine

Specifications Table

Packaging	TO-5 Cap
Target Gases	secondhand smoke, smoke generated from burning of wood and paper, volatiles of wine (alcohol) and cosmetics, ammonia, hydrogen sulfide, hydrogen, carbon monoxide, propane, methane, styrene, propylene glycol, phenol, acetone, thinner, insecticide, correction fluid, benzene, formaldehyde and so on
Voltage for circuit	5±0.1V DC
Load resister	27K/47KΩ (typical)
Voltage for heater	4V
Current of heater	60~80 mA
Power consumption	P ≤ 0.4 W
Typical response towards 20 ppm of CO in 25 oC (the voltage variation of RL)	0.25～0.6 V

To learn more, please download the PDF.