gas meter reed sensor mount honeywell BK-G4 MT

In order to easily integrate my gas meter into my smart home, I converted a zigbee water leak sensor to a reed sensor and mounted it on the gas meter. Now I receive a pulse from the zigbee sensor for every 0.01m³ or 10 liters of gas

reed sensor: https://de.aliexpress.com/item/4000773848015.html

water leak sensor: https://de.aliexpress.com/item/1005006464066972.html

At the end of the cable, the water sensor must be removed and soldered to the two wires of the reed sensor.

To fix the model with a M6 screw