User’s manual NX-4a Side 3
What functions does NX-4 have?
1. Warning of ”narcosis” gases.
Alarms many gases with anesthetic effect on humans. These gases are often highly explosive, have a
strong smell and spreads evenly in the room. The NX-4 will sound the alarm long before these gases
reaches dangerous concentrations. If outside lamps are connected to NX-4, they will flash when the
“Narcosis” gas alarm is trigged. This will help to attract attention from others near by.
2. Warning of propane/butane gas.
This sensor is separate from the main unit and installed by the floor in order to detect the heavy
propane gas as early as possible. This sensor is also very sensitive for hydrogen from over charged
batteries.
3. Warning of fire.
The smoke detector does not only detect smoke and fire, but also other air pollutions like exhaust gas
and generally poor air quality. It also detects many odorless gases used by robbers witch makes
humans sleep heavily. This is very dangerous because such gases may displace the oxygen and
suffocate humans. You may experience alarms from this detector if the air quality becomes poor in
general. This is in many cases an indication of insufficient ventilation.
4. Warning of persons nearby.
NX-4 is equipped with inputs for outside mounted infra read motion detectors. The detectors will
alarm the presence of persons close to the vehicle. Occasional by passers will be detected and the
lamp(s) will light (if equipped), but no alarm will sound. However, if motion persists in the alarm zone
for certain amount of time, the alarm will sound. The indoor alarm volume may be adjusted to a
desired level or completely off. This is convenient if you are parking at a “safe place” where people
normally are passing all the time.
An added benefit from the motion detectors and lights is that you will get an automatically operated
welcome/work light for your self when you are leaving or arriving to your vehicle at night. Burglars
also tend to dislike working in a lighted area, especially if the light comes on when they arrive.
One detector on each side will give adequate protection in most cases.
Special made motion detectors are recommended because they are made to withstand the environment
and have the correct electrical data.
Connection of external equipment.
NX-4 has several external alarm outputs for connection of equipment like extra alarm sounder,
forwarding of alarm signals to a cellular phone alarm sender, external flood lights, propane gas shut
down valve and so on.
What gases does the NX-4 detect?
NX-4 has three different gas detectors. Each detector has a specific target gas, but they all will also
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