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Plug Althera into any outlet. Wait 200 seconds for the sensor to calibrate. That's it. You're protected. No tools. No ladder. No complicated setup. And unlike smoke detectors, height doesn't matter for carbon monoxide it mixes evenly with air. So any outlet works. Bedroom. Kitchen. Hallway. Plug in and you're covered.
3 to 4 detectors is ideal for full home protection. Place one near the bedrooms, one near the kitchen, one near your furnace or water heater, and one on any additional floor. That way you're covered where you sleep, where you cook, and where gas appliances run.
PPM — The amount of carbon monoxide in your air. Zero means clean air. The higher the number, the more CO is present. Althera alarms before 30 PPM.
GAS LEL — The percentage of natural gas or propane in your air. Zero means no leak. Any number above zero means gas is leaking somewhere. Act immediately.
Humidity — The moisture level in your home. Shown as a percentage. Normal is between 30-50%. Helps you keep your air comfortable and healthy.
All three. One screen. Real numbers. No guessing.
Standard detectors show a green light. Althera shows real numbers.
Standard detectors alarm at 70 PPM. Althera alarms before 30 PPM.
Standard detectors only see carbon monoxide. Althera sees carbon monoxide, natural gas, and propane.
Standard detectors use cheap grade 1 sensors. Althera uses grade 3 sensors — faster, more accurate, longer lasting.
Standard detectors make you guess. Althera lets you know.
Carbon monoxide builds quietly. Detectors that only alarm at higher thresholds leave households with less time to respond. Althera helps make rising gas levels visible earlier through live PPM readings and low-threshold alerts.
Every year, over 60 British families die from CO poisoning, most of them while sleeping. The tragedy? Almost every victim had a "working" detector on their wall. Green light glowing. Silent. CO comes from boilers, gas hobs, gas fires, water heaters. You can't smell it. You can't see it.
You just don't wake up.
Carbon monoxide builds quietly, and the effects often begin before a standard detector alarms. That is what makes earlier visibility so important.
We make things that work better and last longer.
Firefighters know the pattern too well: families trust a “working” detector, but the warning comes too late. Althera is built to make rising gas levels visible earlier, so households have more time to act.
Every Althera detector is backed by our 30-Day Risk-Free Trial and 3-Year Warranty.
