Thitronik G.A.S.-pro Manuel page 6

- As the power indicator is located on the front of the housing, the use of an external
power indicator (Art. No. 100034) may be advisable when the device is mounted in
a cabinet.
3. Connecting sensors/siren/automatic switch-off:
- The G.A.S.-pro can be operated with up to 3 sensors. These can be either narcotic/
bottled gas sensors, CO sensors or a combination of the two.
- The G.A.S.-pro is equipped with an alarm output with which any commercially
available vehicle alarm system can be controlled.
- The external siren is used to scare off the perpetrator and to alert possible
passers-by.
- The G.A.S.-pro is equipped with the option of automatic activation/deactivation via
the vehicle ignition (active with ignition switched off/inactive with ignition switched
on).
For connection, see last page. This connection variant is recommended. Should this
variant not be possible, the G.A.S.-pro can naturally also be operated with a switch
(connect +12 V to the „IGN" terminal via a switch).
All connection work must be carried out in the deenergised state!
4. Connecting to an alarm system:
- Most alarm systems operate with normally-closed (NC) contacts. Connect the
terminals marked "NC" and "COM" in series to one of the inputs of your alarm
system.
- If your alarm system operates with normally-open (NO) contacts, connect the
terminals marked "NO" and "COM" in parallel to one of the contacts of your alarm
system.
5. System operation and function:
- After switch-on, the G.A.S.-pro signals its readiness for operation with three beep
tones and the power indicator on the front of the housing lights up continuously.
- Following the warm-up phase (approx. 4 min.), the power indicator flashes
periodically and the G.A.S.-pro is now able to detect gas.
- In case of an alarm, the integrated siren and, if installed, the external siren sounds
for approx. 30 seconds. If, after an alarm break of 30 seconds, gas is still present,
the alarm sounds again.
With a carbon monoxide alarm, the external siren sounds for 10 sec.
- If a sensor error or a cable defect is determined during the permanent self-
diagnosis, an interrupted tone sounds until the defect is eliminated.
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See last page for terminal diagram.