Based on this product's specifications, here are some alternatives and similar models
Gas leak detector Qoltec 52576 — CO detector with 85 dB alarm, EN50291-1:2018 certified
Summary description:
Qoltec 52576 is a gas leak detector and carbon monoxide (CO) detector with an integrated 85 dB audible alarm and EN50291-1:2018 certification. Designed to detect CO and gas leaks, it alerts occupants with a loud alarm for residential or small commercial use. Suitable for installation in homes, apartments and garages to improve safety and early warning.