AMT310 CO2 Temp. RH Monitor with Data Logger

CO2 / Temperature / RH Monitor

AMT310 CO2 Temp. RH Monitor with Data Logger

Keywords: co2 monitor, indoor air quality monitor, ndir co2 meter, co2 temp rh monitor, carbon dioxide detector

AMT310 3-in-1 desktop monitor for CO2, temperature and relative humidity, with dual-beam NDIR sensing and data logging.

The AMT310 is a 3-in-1 desktop monitor that measures the indoor air quality index — CO2, temperature and relative humidity — on one clear LED screen. Dual Beam NDIR (non-dispersive infrared) technology keeps the CO2 reading stable over the long term across a 0 to 5000 ppm range, and a 3-color LED (green / yellow / red) gradually changes color with CO2 concentration so the air status can be read at a glance. Human and plant modes are built in: human mode is used to verify indoor air quality in homes, offices, schools, restaurants, libraries, stations or vehicle interiors, while plant mode helps growers control CO2 level in greenhouses and hydroponics for efficient plant growth and higher yield.

A digital memory chart records statistics over an adjustable 24-hour or 7-day period, and the trend chart shows variable Min / Hr / Day / Wk values for CO2, RH and temperature readings. A 2-channel low-drift NDIR gas sensor works together with an audible alarm for low or high CO2 levels, and the CRR (CO2 Replenish Reminder) prompts when fresh air is needed. The foolproof "Hold Home" function keeps a reading on screen for stable, repeatable notes. The back carries a hook-and-loop fastener that attaches to an external battery pack (battery pack not included) for multiple hanging options, and the green power supply is compatible with a standard smartphone charger.

Key Features

1. Dual Beam NDIR technology — non-dispersive infrared measurement is used to improve long-term stability.

2. 3-in-1 CO2 / temperature / RH monitor — one unit with tracer function for all three indoor air parameters.

3. Chart with variable time zoom levels — digital memory chart over an adjustable 24-hour or 7-day period, with Min / Hr / Day / Wk trends.

4. Built-in plant types directory — plant mode supports CO2 control in greenhouses and hydroponics.

5. 3-color LED indication — green / yellow / red gradually changes color with CO2 concentration.

6. Foolproof "Hold Home" function — holds the current reading for stable comparison and recording.

7. CRR, CO2 Replenish Reminder — reminds the user when the CO2 level calls for fresh air.

How to Use

1. Power the unit — connect the Micro USB port to a standard smartphone charger (DC 5 V).

2. Wait for warm-up — the sensor stabilizes in less than 30 seconds, then the CO2 value appears on the main display.

3. Choose the mode — select Human mode for living and working spaces, or Plant mode for greenhouses and hydroponics.

4. Read the air status — the 3-color LED together with the ppm value shows whether CO2 is low, normal or high.

5. Hold and review — use the Hold Home function for a fixed reading, and open the chart to review Min / Hr / Day / Wk trends over 24 hours or 7 days.

6. Mount where needed — hang the unit with the hook-and-loop fastener on the back and attach an external battery pack for portable use.

Technical Specifications

CO2 measurement

CO2 range	0~5000 ppm
Sensor type	Dual-Beam NDIR
Accuracy at 0~3000 ppm	±50 ppm or ±5% of reading, whichever is greater; accuracy over 3000 ppm ±7%
Repeatability	20 ppm at 400 ppm (standard deviation of 10 readings in 1 minute)
Display resolution	1 ppm (0~1000); 5 ppm (1000~2000); 10 ppm (>2000)
Temperature dependence	±0.1% of reading per °C or ±2 ppm per °C, whichever is greater, referenced to 25 °C
Pressure dependence	0.13% of reading per mmHg (corrected by user's altitude input)
Response time	<2 min for 63% of step change or <4.6 min for 90% step change
Warm-up time	<30 sec

Temperature measurement

Operating temperature	32 °F to 122 °F (0 °C to 50 °C); storage temperature -4 °F to 140 °F (-20 °C to 60 °C)
Display resolution	0.2 °F (0.1 °C)
Accuracy	±1 °F (±0.5 °C)
Response time	<20 min (63%)

Relative humidity measurement

RH range	0~100%
Accuracy	±5%
Resolution	1% on main reading, 0.1% on Max / Min reading
Operating and storage RH	0~95% non-condensing

Power and dimensions

Power requirements	DC 5 V, 160 mA peak, 15 mA average at 5.0 V
Power port	Micro USB
Dimensions (L x W x D)	4.7 x 3.6 x 1.1 inches (120 x 91.2 x 27 mm)

Applications

1. Verifying indoor air quality in homes, offices, schools, restaurants, libraries and stations in Human mode.

2. Checking CO2 level inside vehicle interiors, caravans and closed cabins.

3. Greenhouse and hydroponics management in Plant mode, where CO2 level is controlled for efficient plant growth and increased yield.

4. Building, HVAC and ventilation checks, including 24-hour or 7-day CO2 trend records for reports.

5. Classrooms, meeting rooms and other occupied spaces where an audible high-CO2 alarm and CRR reminder are useful.