Feature

●Includes 9 detectors for flammable toxic gases, very complete gas detector set
●Can be used for home and factory gas leak monitoring device, which can be used for LPG, butane, propane, methane, smoke and other discovery;
●The use of high quality double panel design, with power indicator and TTL signal output instructions;
●Valid TTL output signal is low. (If the output is low signal, can be connected directly to the microcontroller or relay module)
●The analog output voltage is the higher the voltage.


Description

detection

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

The switching signal has a DO (TTL) output and an analogue output AO;

Valid TTL output signal is low. (Low-level signal when the output light can be connected directly to the microcontroller or relay module)

Analogue output voltage with the higher concentration of higher voltage.

A gas, natural gas, city gas, smoke better sensitivity.

There are four screw holes for easy positioning;

Has a long service life and reliable stability

Fast response and recovery properties

Input voltage: DC5 V. Power consumption (current): 150 mA.

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

AO output: 0.1-0.3V (relative to pollution), the maximum concentration of a voltage of about 4V

Special note:

After the sensor has been powered, it must warm up by 20 S, the measured data was stable, the heat sensor is a normal phenomenon, because the internal heating wire when it is hot is not normal.

VCC: positive power supply (5V).

GND: power supply is negative

DO: TTL switch signal output.

AO: analogue signal output.