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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Temtop S1 PM2.5 Air Quality Monitor & Indoor Thermometer

Temtop S1 PM2.5 Air Quality Monitor & Indoor Thermometer

Product ID: 518760764

Details

Battery Description
Alkaline
Brand
Temtop
Lower Temperature Rating
10 °C
Mounting Type
Surface Mount
Operating Humidity
10-99%

🔋60-day battery life on a single charge

🌡️Precise indoor temperature & humidity

🌬️Real-time PM2.5 & AQI tracking

40127CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Stay ahead of the air you breathe—because comfort and health can't wait.

POWER THAT LASTS - Energy-efficient tech delivers up to 60 days of continuous monitoring on one charge.
UNMATCHED PORTABILITY - Compact design lets you take clean air awareness anywhere—from office to nursery.
COMFORT MEETS PRECISION - Accurate thermo-hygrometer sensors keep your space perfectly balanced.
ONE SCREEN TOTAL CONTROL - Clear, easy-to-read display shows all vital air quality and comfort metrics at a glance.
BREATHE SMARTER LIVE BETTER - Instantly monitor PM2.5 and AQI for a healthier indoor environment.

The Temtop S1 is a sleek, portable air quality monitor and indoor thermometer that tracks PM2.5, AQI, temperature, and humidity with high accuracy. Featuring a miniature laser particle sensor and digital thermo-hygrometer, it offers real-time environmental insights on a single clear display. Its energy-efficient design powers up to 60 days on one charge, making it ideal for home, office, nursery, or travel use.

Specifications

ASIN	B0CLCL9HH4
Battery Description	Alkaline
Best Sellers Rank	#9,409 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #20 in Indoor Air Quality Meters
Brand Name	Temtop
Customer Reviews	4.0 4.0 out of 5 stars (295)
Included Components	air quality monitor, user manual
Item Highlight	AQI, Temperature & Humidity Monitor, Portable, 60-Day Battery Life, for Home, Office, Nursery & School
LowerTemperature Range	10 °C
Manufacturer	Elitech
Mounting Type	Surface Mount
Number of Items	1
Operating Humidity	10-99%
Part Number	S1
Temperature Accuracy	1 degree Celsius
Temperature Reading Accuracy	plus_minus_1_degree_celsius
Unit Count	1 Count
Upper Temperature Range	50 °C

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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40127CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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