Based on the gas you need to detect, you can choose among the LPG or methane gas version.

Both versions of this gas detectors allow you to connect up to 10 detectors in cascade via the 3 dedicated terminals. The device is able to signal gas concentrations far below the hazard thresholds and other conditions relating to the state, via 4 LEDs and an internal buzzer. Possibility to connect one or more external buttons for the activation of a manual alarm. Possibility to connect one or more external buttons for system reset after an alarm.