Skip to content
AkerminMeasure. Monitor. Improve. Compare Products
Review

Temtop P1 Review: Portable PM2.5 and PM10 Monitoring

The Temtop P1 is a newer portable particle monitor with PM2.5 resolved to 0.1 μg/m³, a Bluetooth app with export and quiet hours, and LoRa connectivity for reporting to a Temtop base unit. This review covers what those features mean in practice and who needs them.

By the Akermin Editorial Team · 4 min read

As an Amazon Associate, Akermin earns from qualifying purchases. Product links on this page are affiliate links.

Temtop P1 Review: Portable PM2.5 and PM10 Monitoring

Temtop · Temtop P1 Portable Air Quality Monitor with LoRa Connectivity

View on Amazon

Price and availability are shown on Amazon and can change at any time.

Verdict

The P1 is a portable particle monitor: PM2.5, PM10, temperature, humidity and AQI in a lightweight body with a 2000 mAh battery for a day away from the charger. A Bluetooth app delivers alerts, history and report export, with quiet hours so the alarms do not fire at night. The LoRa radio lets it report to a Temtop M100 2nd Gen as a sub-unit, which turns it into a room sensor in a multi-room system. The listing quotes PM2.5 resolution to 0.1 μg/m³ and describes the accuracy as meeting EPA standards; we treat that as the manufacturer’s claim. For spot checks around a home, a workshop or a car, and for anyone building a Temtop LoRa network, it is a sensible buy. It does not measure CO₂, VOCs or formaldehyde.

Who It Is For

  • Allergy sufferers and parents who want to check particle levels room by room and get a phone alert when a threshold is crossed.
  • Owners of the M100 2nd Gen who want additional rooms on the same display.
  • People who want a particle reading in the car during commutes or wildfire season.

Documented Specifications

Item Documentation
Particles PM2.5 and PM10, PM2.5 resolution 0.1 μg/m³
Comfort Temperature, relative humidity
Derived AQI in real time
Connectivity Bluetooth to the Temtop app; LoRa to a Temtop main unit
App features Instant notifications, history, report export, quiet hours
Alarms Audio and visual
Battery 2000 mAh, all-day use per the listing

Resolution Versus Accuracy

The 0.1 μg/m³ figure is a resolution: it is how finely the display steps. It says nothing about how close the reading is to a reference monitor. Optical particle sensors estimate mass from light scattering and assumptions about particle density, so their accuracy is quoted in percent or in tens of micrograms and varies with humidity and the type of particle. The listing’s statement that the sensors meet EPA standards is the manufacturer’s claim; EPA publishes evaluation reports for low-cost sensors, and a buyer who cares about the numbers should read those rather than the resolution figure. For trend use, before and after running a purifier, or indoor versus outdoor during smoke, the P1 is well suited. See choosing a PM2.5 monitor.

App, Alarms and Quiet Hours

The Temtop app receives notifications over Bluetooth when the phone is in range, shows history and exports reports. The audio and visual alarms on the device work without a phone. Quiet hours are the feature that makes a monitor with a buzzer tolerable in a bedroom: set the window and it stays silent overnight while still logging. Advice on setting alarm levels that are useful rather than annoying is in setting useful alerts; the principle is the same for particles.

LoRa and the Temtop Network

On its own the P1 talks to a phone. Paired with an M100 2nd Gen, it becomes a LoRa sub-unit: readings travel over a long-range radio to the main display and from there to the app over Wi-Fi. The listing for the M100 2nd Gen quotes up to 1000 m of range. That makes the P1 a way to add a bedroom, a classroom or an outbuilding to a system without Wi-Fi at each point. Our article on building a whole-home monitoring setup covers when a hub-based design beats several independent Wi-Fi monitors.

Strengths

  • PM2.5 and PM10 with comfort readings in a portable body.
  • App alerts, export and quiet hours.
  • LoRa sub-unit role in a Temtop system.
  • Battery for a full day of spot checks.

Limitations

  • No CO₂, VOC or formaldehyde.
  • Bluetooth only unless paired with a main unit.
  • Resolution and EPA wording in the listing should not be read as an accuracy specification.

How It Compares

The Temtop P2 is the same body with CO₂ added and is the better buy for indoor ventilation questions. The Temtop S1 is smaller and simpler with far longer battery life but no PM10 or app. The IQAir AirVisual Outdoor is the fixed outdoor alternative if the goal is a permanent station rather than spot checks.

How We Research

This review is based on Temtop’s published specifications, the Amazon listing and owner reports. We did not run laboratory tests or co-locate the P1 with a reference instrument.

Temtop P2 Portable CO2 & Air Quality Monitor with LoRa Connectivity

Temtop P2 Portable CO2 & Air Quality Monitor with LoRa

View on Amazon
Temtop S1 PM2.5 Air Quality Monitor & Indoor Thermometer

Temtop S1 PM2.5 Air Quality Monitor & Indoor Thermometer

View on Amazon
AirVisual Outdoor – Outdoor Air Quality Monitor, Detects PM1, PM2.5, PM10, Optional CO2, Temperature, Humidity, Pressure, Modular Sensor Design, Wi-Fi, LAN, German Made

AirVisual Outdoor – Outdoor Air Quality Monitor, Detects PM1, PM2.5,

View on Amazon

Products shown because their documented specifications fit this guide. Price and availability are on Amazon and can change.

Frequently Asked Questions

What does LoRa connectivity mean on the P1?

LoRa is a long-range low-power radio. Temtop uses it so the P1 can act as a sub-unit reporting to an M100 2nd Gen main display. On its own the P1 uses Bluetooth to the app.

What does 0.1 μg/m³ resolution mean?

Resolution is the smallest step the display shows, not the accuracy. The listing quotes 0.1 μg/m³ for PM2.5; accuracy of an optical sensor is a separate and wider figure.

Does the P1 measure CO₂?

No. The P2 is the sibling that adds CO₂.

Can it be used in a car?

The listing mentions use in vehicles. The 2000 mAh battery covers a day of use and the alarms can be silenced with quiet hours.

Affiliate disclosure: Akermin earns a commission from qualifying Amazon purchases made through links on this page. Our editorial picks are based on documented specifications and owner feedback, not commissions.