Actaris G4 RF1 reed contact casing

thingiverse

A simple tool for reading the counter of a gas meter using a reed contact. It's perfect for smart home applications. The casing can be mounted on top of the gas meter's counter in the recess created by the vendor for the original pulse counter. I've designed and tested it with an Actaris G4 RF1, but it might also fit other gas meters from different vendors. I'm using a 15mm reed contact that fits snugly inside the case. Here's how it works: at 7x m³, a magnet located on the counter's inside triggers the reed contact, closing it. This contact can be connected to a circuit that counts pulses and calculates the actual gas meter reading - for example, using a Wemos D1 Mini or Arduino.