HD100 Double Control front view Homplex HD100 Double Control wall mounted methane gas detector Methane gas detector Homplex HD100 Double Control packaging


The HD100 Double Control is an innovative methane gas detector. The HD100 Double Control can trigger and control two devices simultaneously.

This gas detector is designed to operate with normally open and normally closed solenoid valves at 230 VAC. In parallel, the gas detector (sensor) can control and/or 12 VDC solenoid valves (normal open contact with potential only).



HD100 Double Control Strong alarm
Strong alarm You’ll hear it immediately when it triggers the alarm/electrovalve thanks to the 85 decibel piezo siren!
HD100 Double Control Alarm 10% L.E.L.
Alarm 10% L.E.L. Increased sensitivity thanks to the high performance SN02 sensor.
HD100 Double Control Extend functionality!
Extend functionality! The second output of the HD100 Double Control can be used to connect the detector to an intelligent power or building management system.
HD100 Double Control Quick release
Quick trigger The detector will trigger the solenoid valve just 10 seconds after the sensitivity threshold is exceeded.
HD100 Double Control Simultaneous control?
Simultaneous control With the HD100 Double simultaneous control and triggering of two devices is possible! So it uses two solenoid valves or one solenoid valve and one 12 VDC output.
HD100 Double Control Speed of activation
Speed of activation It only takes 15 seconds from power up to methane gas detection activation!


Gas detection
CH4 Methane gas
1 or 2 solenoids control, 1 solenoid valve and 1 9-12 VDC output
Sensor type
SnO2 semiconductor
Sensor lifespan
min. 5 years
Electric acuator
NC / NO relay, 8 A at 250VAC
Electric acuator
1.5A / 12VDC NC/NO relay
Power absorbed
Operating temperature
0°C ... 40°C
Storage temperature
– 10°C … + 50°C
Protection class
Piezoelectric alarm
85 dB la 1 m
aprox. 250 gr.
91 x 91 x 35 mm
2 years

Frequent questions

Why is the yellow LED always on?
This indicator warns that the gas sensor is not working properly. Contact a Homplex representative to identify the cause and/or replace the methane gas detector. As long as the yellow LED is lit, the detector does not measure and does not respond if the dangerous level of methane gas in the room is exceeded!
I smell gas, but the detector doesn't respond
The unpleasant and easily recognisable smell (an unpleasant sulphurous odour) of natural gas used in homes is due to odorant additives, such as tert-butylthiol, which are used for safety. Most people can detect this smell at fairly low levels of gas concentration (2% L.I.E. or less), but certain disabilities or advancing age can lead to a reduction in this smell sensitivity. The L.I.E. (Lower Explosive Limit) of the gas defines the minimum volume ratio of combustible gas or vapour in the air in which an explosive atmosphere will form. The detector is calibrated to trigger the alarm at the threshold of 10% of the L.I.E. of the detected gas. Thus, it is possible for a person to smell gas before the alarm is activated. This does not necessarily indicate a fault in the device. For humans, a gradual increase in gas concentration may also go unnoticed due to olfactory fatigue. Translated with www.DeepL.com/Translator (free version)
How can I tell if the detector is working properly?
After powering up, wait 15 seconds for the self-test process to complete. When this process is complete the red and orange LEDs will go out and the green LED will light solid. Press the Test button for 5 seconds to verify. The detector will acoustically and visually signal a possible danger and send a signal to close the solenoid valve.
Multiple trigger detectors

HD100 Double Control

Product code: 3714356
Dual trigger wired methane gas detector
  • Strong alarm
  • Alarm 10% L.E.L.
  • Extend functionality!
  • Quick trigger
  • Simultaneous control
  • Speed of activation