CO2 Temp Humidity Detector 5000ppm Range

A practical, field-deployable 3-in-1 air quality instrument measuring carbon dioxide (400–5000 ppm), temperature (°C/°F selectable), and relative humidity. Housed in impact-resistant plastic (black and red), it utilises an S8601 semiconductor CO₂ sensor and integrated thermal/hygrometric elements. The LCD screen shows CO₂ concentration on the upper line and concurrent temperature and humidity readings on the lower line. A tri-colour backlight responds in real time to CO₂ levels — enhancing situational awareness. Pressing HOLD freezes the current measurement for verification or logging. Runs on 3 × 1.5V AAA batteries (excluded); auto-shutdown prevents unnecessary drain. At CO₂ concentrations beyond 5000 ppm, the unit displays 'H1' and emits a continuous tone — requiring full power cycle to reset. Commonly applied in horticultural greenhouses, livestock housing, fermentation and carbonation processes, energy performance verification, subterranean safety protocols, and indoor public environments — including early years education, secondary classrooms, shared workspaces, grocery stores, rail depots, and outpatient facilities — supporting healthier, more productive, and safer interior climates.