Do you find it to be reliable/accurate? I was going to order one of these until I read some reviews.
I'm not sure if they're accurate (never got mine third party tested) but they're consistent. Stick two next to each other and get the same results.
I only have an hour of data so far
Edit: after a day’s data, now’s the hard part: deciding what to do about it and how much to trust the accuracy. I have not put the detector in the basement yet(primary goal is monitoring radon), but it’s in a family room addition on a slab, with old direct vented gas heaters (actually those are off right now, so it’s not ytesting those)
- VOC typical level is generally fine but there was a spike at 8pm well above the recommended limit. Is it a glitch/noise? Is it something I need to act on? Is it accurate? I don’t remember any event that could have caused it, so I guess for now see if it repeats
- pm10 and pm2.5 are generally fine but there was a spike just after midnight. Still within recommended levels so I’m not worried yet but will pay attention
- radon is still climbing. Still fine and they say it needs up to 30 days, but I’d expect the basement to be higher so I need this to level off soon. If it doesn’t, my likely action is to do a charcoal test and see how the numbers match up
Clearly I also need a chart that can display a limit, or two. For example, who recommends a limit of 100 for radon and epa recommends a limit of 148, so I’d like to see them both on the radon graph, and maybe a color change or something if a point in time exceeds them


I don’t even have the right terminology so google and ChatGPT were not helpful ….. does ha have some sort of trend graph that is a combination of different sets of values, over the same time axis?
A goal might be to identify events and their effects. For example perhaps turning on the dryer raises particulates and CO2: I know when I turn on the dryer so want to look at the graph for any matching changes in any measurement .
(Or maybe I’m fooling myself: I have no idea what the sampling frequency is yet)
I've found apexcharts-card to be fairly configurable and good looking. I've put 2 different data types on the one graph and used two axes (price left, % right). Sometimes the values get "stuck", but a refresh fixes it.

YAML code for my chart
type: custom:apexcharts-card
apex_config:
legend:
show: false
graph_span: 12h
span:
start: minute
yaxis:
- id: price
min: ~-10
max: ~40
decimals: 0
- id: renewables
opposite: true
min: 0
max: ~100
decimals: 0
header:
show: true
title: Amber Prices
show_states: true
colorize_states: true
series:
- entity: sensor.amber_general_forecast
name: General Forecast
unit: c/kWh
color: "#3498DB"
yaxis_id: price
data_generator: >
const data = [];
data.push([hass.states['sensor.amber_general_price'].attributes.nem_date.replace(/0{2}$/,
"30"), hass.states['sensor.amber_general_price'].attributes.per_kwh*100]);
for(let i = 0; i <= 24; i++) {
data.push([entity.attributes.forecasts[i].nem_date.replace(/0{2}$/, "30"), entity.attributes.forecasts[i].per_kwh*100])
}
return data.reverse();
- entity: sensor.amber_feed_in_forecast
name: Feed In Forecast
unit: c/kWh
color: "#ff9800"
yaxis_id: price
data_generator: >
const data = [];
data.push([hass.states['sensor.amber_feed_in_price'].attributes.nem_date.replace(/0{2}$/,
"30"), hass.states['sensor.amber_feed_in_price'].attributes.per_kwh*100]);
for(let i = 0; i <= 24; i++) {
data.push([entity.attributes.forecasts[i].nem_date.replace(/0{2}$/, "30"), entity.attributes.forecasts[i].per_kwh*100])
}
return data.reverse();
- entity: sensor.amber_feed_in_forecast
name: Renewables
yaxis_id: renewables
unit: "%"
color: "#2ECC71"
data_generator: >
const data = [];
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