At the selected wall position, mark two installation holes on the random installation board (the hook on the board should be horizontal upward);

Drill mounting holes, put in random mounting rubber plugs, and then fix the mounting plate on the wall with random tapping screws;

Align the three holes on the back of the fuselage with the fixing hooks on the mounting plate to hang the fuselage;

After connecting the relevant output signal lines, turn on the power supply.

Extended data:

1, function

(1) vent hole: gas (natural gas, liquefied petroleum gas, city gas) enters the induction chamber through the gap between the alarm face shell and the bottom shell. In order to make the air circulate normally, don't install the alarm in dirty, dusty or greasy places.

(2) Sensor: The sensor adopts semiconductor technology, which has extremely high sensitivity to combustible gas and avoids false alarm.

(3) Buzzer: The volume is as high as 85 decibels, which will remind you of potential dangers. Alarm form: continuous ringing.

(4) Preheating: When the alarm is powered on, it needs to be preheated for 2-3 minutes, and it will not alarm for 2-3 minutes.

2, gas leakage alarm function

Functionally, it can be divided into two types: a leak alarm with leak alarm function and a detection alarm with alarm function, which can indicate the concentration of detected gas. From the place of use, it can be divided into civil gas leakage alarm and commercial alarm.

Civil alarm is usually an independent gas alarm for family use, with simple function; Commercial alarms are mainly used in gas transportation and storage places, gas-using factories and public places where gas leakage may occur.

The Code for Urban Gas stipulates that gas alarms should be installed in basements, semi-basements, gas chambers in confined spaces above the ground, pipeline wells in buildings and closed metering rooms. The relevant codes and regulations of buildings and gas also suggest the use of civil gas leak alarms.

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