Can this detect cigarette smoke specifically?

If by "detect cigarette smoke specifically" you mean, does the Temtop list the specific causes of unhealthy air, no it doesn't. However, it will change the level of air polution when cigarette smoke or other polutants in the air in 2 specific readings: the level of PM2.5 polutants, listing them as healthy or unhealthy, and of AQI of Air Quality Index, listing it as good, moderate or dangerous. I find it extremely helpful.

Why did the manufacturer unnecessarily shrink the third digit in 3 of the 4 fields? Looks unattractive.

I imagine it was a better alternative than using space for a decimal point.

What type/size of battery is used? How many batteries are required? Are the batteries replaceable? Assuming rechargeable type, any limit on max mAH?

It's a built-in rechargeable battery. Uses USB-C to charge. Battery life is quite good.

Most of the reviews complain that the battery has a short life. Would there be any problem if I left it plugged in 24/7?

Keeping the AirTemp on 24/7 will dramatically shorten its life. However, it is very easy to turn on and off. I turn mine on for a minute or two three times a day which lengthens total battery life from as little as 4 hours to as long as more than a year.

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室内温度計温度湿度計温度を越える空気質モニターテントップデジタル湿度計 AQI検出器付き

室内温度計温度湿度計温度を越える空気質モニターテントップデジタル湿度計 AQI検出器付き

Product ID: 739799421

Details

ブランド
Temtop
動作湿度
80%
商品の重量
0.35 ポンド
色
電池の説明
充電式バッテリー。

🔋Up to 1 month battery life in Eco mode

🌡️±0.5% accuracy temp & humidity

🌬️Real-time PM2.5 air quality sensing

Description

🌿 Breathe smarter, live better — your all-in-one air guardian.

SLEEK SLIM DESIGN - 30% thinner than typical hygrometers, this compact device fits seamlessly into any modern workspace or home setup.
PRECISION YOU CAN TRUST - Ultra-sensitive sensors deliver ±0.5% accuracy for temperature and humidity readings, keeping your environment perfectly monitored.
EFFORTLESS PORTABILITY SETUP - Magnetic mount and USB rechargeable battery mean you can place it anywhere and keep it powered without hassle.
NEXT LEVEL AIR QUALITY INSIGHT - Integrated PM2.5 detection powered by WHO standards lets you track harmful particles in real time—because your health deserves the best.
SMART MODES FOR EVERY LIFESTYLE - Choose from Smart, Real-time, Interval, and Eco modes to balance data freshness with battery longevity effortlessly.

The Temtop S1 is a cutting-edge indoor thermometer, hygrometer, and air quality monitor that combines temperature, humidity, and PM2.5 sensing in a sleek, ultra-thin design. With ±0.5% measurement accuracy, four intelligent working modes, and up to one month of battery life on a single charge, it offers real-time environmental insights to help professionals and health-conscious millennials maintain optimal indoor air quality effortlessly.

Specifications

ASIN	B0BQW2BX6W
Amazon 売れ筋ランキング	ホーム＆キッチン - 916,247位 ( ホーム＆キッチンの売れ筋ランキングを見る ) 家庭用温湿度計 - 1,507位
おすすめ度	4.3 5つ星のうち4.3 (746) var
カラー	口頭ステータスインジケーター。
バッテリータイプ	充電式バッテリー。
ブランド名	Temtop
メーカー名	Elitech
メーカー型番	S1plus
モデル番号	S1
ユニット数	1.0 個
上位温度定格	35 摂氏
動作湿度	80%
商品の重量	0.35 ポンド
温度精度	±1°C
温度読み取り精度	plus_minus_0_point_5_degrees_celsius

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室内温度計 温度湿度計 温度を越える空気質モニター テントップデジタル湿度計 AQI検出器付き

Details

Details

Description

Specifications

Common Questions

室内温度計温度湿度計温度を越える空気質モニターテントップデジタル湿度計 AQI検出器付き