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Generic · Lascars Wireless CO2 and Air Quality Data Logger - EL-IOT-CO2
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The Lascars EL-IOT-CO2 is the only product in this review. It is a wireless CO2, temperature and humidity logger with customizable high and low alarms, USB power with AA battery backup, and data access through the EasyLog App. The listing does not publish sensor type, accuracy, range, or logging interval, so it suits buyers who need a connected logger with alarms more than those who need documented measurement performance. Compared with the multi-parameter the AirWhisper 16-in-1, the particle counters the Generic 6-Channel and the FABISENSE PM25, it is the only one here focused on CO2 logging with app-based access, but it is not a substitute for a particulate monitor or a calibrated reference instrument.
A CO2 Logger First, an Air Quality Monitor Second
The Lascars EL-IOT-CO2 is described in its title as a wireless CO2 and air quality data logger. The bullets then list three measured quantities: carbon dioxide, temperature and humidity. That is a narrow set compared with multi-parameter monitors that also report particulate matter or volatile organic compounds. For many indoor spaces, CO2 is the useful proxy for ventilation, and temperature and humidity affect comfort and mould risk. But the listing does not claim to measure particles or chemicals, and buyers should not assume it does.
This matters when you compare it with the other instruments on the site. The AirWhisper is a 16-in-1 indoor air quality monitor, so it covers many more parameters. The two particle counters measure particulate matter and are aimed at cleanrooms, HVAC or general indoor dust. If your question is whether a room is stuffy or whether a filter is working, CO2 is a reasonable indicator. If your question is smoke, dust or allergens, you need a particle instrument. The Lascars sits on the CO2 and comfort side of that divide.
The Alarm and App Features the Listing Does Publish
Two features stand out in the bullets. First, customizable alarms: you can set high and low limits and receive notifications. That turns the device from a passive logger into something that can prompt action, such as opening windows when CO2 climbs. The listing does not state how notifications are delivered, whether by push notification, email or only within the app, so check that before relying on it for alerts.
Second, the EasyLog App for viewing, analysis and download on any internet-enabled device. This is the data access route, and it implies the logger stores readings and makes them available remotely. The listing does not publish the logging interval, memory capacity, or whether data is stored on the device or in the cloud. Those are the numbers a long-term monitoring buyer needs. The site already has a guide on choosing a CO2 data logger for long-term monitoring that explains why interval and storage matter. For this product, treat them as unconfirmed until the manufacturer publishes them.
Power, Placement and the Practicalities of a Wireless Logger
The power arrangement is stated plainly: USB power supply with AA battery backup. That means the unit can run continuously from mains USB and switch to batteries during a power cut, or run on batteries alone where no outlet is available. The listing does not state battery life, how many AA cells are required, or whether the device continues logging at the same rate on battery. Those details affect where you can place it and how often you must service it.
Wireless operation and app access suggest the device connects to a network, but the listing does not specify Wi-Fi, Bluetooth, or another radio. It also does not state a wireless range. For a homeowner wanting a logger in a bedroom or office, that may be acceptable. For a facilities manager placing units across a building, the missing network detail is a real gap. The same caution applies to the alarm feature: without a stated notification method, you cannot know whether an alarm reaches you when the app is closed.
Where This Logger Sits Against the Other Instruments on the Site
The site already covers several air quality instruments, and the Lascars needs to be understood in that context. The AirWhisper is a multi-parameter monitor with a broad feature set. If you want one screen showing many pollutants, that is the type of product to look at. The particle counters are for particulate measurement, with the Generic 6-Channel aimed at cleanroom and HVAC use and the FABISENSE PM25 at indoor PM2.5 and PM10. None of those is a direct substitute for a CO2 logger with alarm limits.
The Lascars is closest in purpose to a dedicated CO2 monitor, but its emphasis is on logging and app access rather than on a large local display. The listing does not mention a display at all. So if you want to glance at a number on the wall, this may not be the right choice. If you want a record of CO2 over time and the ability to set thresholds, it fits. The site’s guide to CO2 monitors with app history and data access sets out the questions to ask about any connected logger, and several of them are unanswered in this listing.
What the Listing Does Not Publish, and Why It Matters
Several specifications a buyer would reasonably want are absent. The listing does not state the CO2 sensor type (for example, non-dispersive infrared or another method), its accuracy, its measurement range, or its resolution. It does not state temperature and humidity accuracy or range. It does not state the logging interval, memory size, or data retention policy. It does not state wireless protocol, range, or notification method. It does not state battery life or the number of AA cells. It does not state whether calibration is possible or recommended.
These are not minor omissions. CO2 sensor accuracy determines whether a reading of 1,000 ppm is meaningful or could be several hundred ppm out. Range determines whether the device is suitable for a classroom or a greenhouse with elevated CO2. Logging interval determines whether you can see short events or only daily averages. Without them, the product is best treated as a convenience logger for trend awareness, not as a compliance or research instrument. The listing also does not state a price, so no cost comparison is possible here.
Maintenance and the Limits of a Consumer CO2 Logger
CO2 sensors drift over time, and many consumer devices rely on automatic baseline calibration that assumes the sensor sees fresh outdoor air periodically. The listing does not mention calibration at all. If the logger is placed in a room that is continuously occupied, the baseline may never reset, and readings can drift. That is a general characteristic of the technology, not a claim about this specific product, but it is the maintenance point the listing leaves out. The same applies to temperature and humidity: the listing gives no accuracy figure, so you cannot know how much to trust the numbers for, say, cold storage or a humid basement.
The AA battery backup is a maintenance item too. Without a stated battery life, you cannot plan replacement. A practical approach is to check the app for battery status if it reports one, and to replace cells on a schedule you set yourself. For a broader view of what to look for in a logger, the site’s guide to choosing an air quality data logger covers the questions that this listing does not answer.
The Verdict on the Lascars EL-IOT-CO2
The Lascars EL-IOT-CO2 is a wireless CO2, temperature and humidity logger with customizable alarms and app-based data access. Its listing publishes the headline features but withholds the measurement specifications that would let a buyer judge its accuracy and suitability for anything beyond trend monitoring. It is a reasonable choice for a homeowner or school wanting to watch CO2 and receive alerts, provided you accept that the numbers are indicative rather than calibrated. It is not a substitute for a particle counter, a multi-parameter monitor, or a reference instrument. If you need documented accuracy or long-term compliance data, look for a product whose listing publishes those figures, or ask the manufacturer for them before buying.
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Frequently Asked Questions
Does the Lascars EL-IOT-CO2 measure particulate matter or VOCs?
No. The listing states it measures carbon dioxide, temperature and humidity. It does not mention particulate matter or volatile organic compounds. For those, you would need a different instrument, such as the particle counters or multi-parameter monitors covered elsewhere on the site.
What is the CO2 measurement range and accuracy?
Not stated in the listing bullets. The listing does not publish the sensor type, range, accuracy or resolution. Without those figures, you cannot know whether the device is suitable for elevated CO2 environments or how much to trust a specific reading.
How often does it log data, and how much can it store?
The listing does not publish the logging interval or memory capacity. It mentions the EasyLog App for viewing, analysis and download, but not the underlying storage or sampling rate. Check with the manufacturer if long-term detailed records are important to you.
How are alarms delivered?
The listing states you can set high and low alarms for instant notifications, but it does not specify whether notifications are push, email, SMS, or only visible within the app. Confirm the delivery method before relying on alarms for safety.
What wireless protocol does it use, and what is the range?
Not stated in the listing bullets. The title says wireless and the app works on internet-enabled devices, but the radio type (Wi-Fi, Bluetooth, or other) and range are not published. This affects placement and network requirements.
Is it suitable for commercial or compliance monitoring?
The listing does not publish accuracy, calibration information, or a compliance statement. For regulatory or compliance work, you would need a device with documented performance and calibration. This product is best suited to general awareness and trend monitoring.
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