The MOES 4‑in‑1 Plug‑in Carbon Monoxide & Natural Gas Detector is a compact, plug‑and‑play safety device that continuously monitors your home for dangerous levels of carbon monoxide (CO) and combustible gases such as natural gas or LPG. It features a real‑time digital display with a 4‑stage alert system that uses color indicators and a loud 85 dB alarm to warn you progressively as gas or CO concentrations increase, helping ensure you can act quickly before conditions become hazardous. In addition to gas detection, this versatile unit also measures indoor temperature and humidity, giving you useful environmental information all in one easy‑to‑install unit that simply plugs into a standard outlet — no wiring or complex setup required.