*Note: * This listing is for the vAir - CO2 Monitor - Base Package. It comes with NO WiFi (+ $6), NO Display (+ $6) and with the less accurate sensor. If you want to order with any of those upgrades, please do this from shop.vair-monitor.com

Overview

Keeping low levels of CO2 at home and in the office boosts health and productivity. The vAir - CO2 Monitor allows you to monitor those values and act accordingly.

• The 6 RGB LEDs and the stylish white box make it a nice addon to your living room or office desk.
• In addition an ambient light sensor adapts the brightness of the LEDs by dimming them during the night, so that it can be safely put inside the bedroom and not be disturbing.
• The simplistic design with the colorful LED-Bar allows the information to be easily understood by anybody.
• With the optional WiFi module the CO2 Monitor turns into a Smart Device, capable of reporting to online services or local server via HTTP and MQTT.
• The device can be optionally eqiupped with an NDIR-based CO2 Sensor. While the accuracy of the standard sensor is +/- 150ppm @1000 ppm (15%), the NDIR Sensor enables higher precision: +/- 50ppm @1000ppm (5%).
• The two USB Inputs - one on the back and one on the bottom allow different power configurations based on the customers' preference
• The Firmware of both the CO2 and Wifi modules is Open-Source and available @Github, so extensions can easily be contributed by the community. Updates are done over the air
• Not necessary an advantage, but worth mentioning is the fact that the enclosure is 3D printed. The main reason for this is flexibility and pricing, as real injection-molded enclosures would add a lot to the price, unless hundreds of devices are produced

Operation

Both types of devices need to be exposed to fresh air each 3 days so that they operate accurately. As with most CO2 Meters, there is some drift in the technical specifications of the CO2 Sensors. Therefore an ABC (Automatic Baseline Correction) algorithm is implemented which monitors which is the lowest CO2 level in the range of 3 days and sets this as 400 ppm (which is the expected outdoor level of CO2). Usually it is enough if the room with the CO2 sensor is not occupied for 5-6 hours, or when the room is intensively ventilated (Which is anyway necessary for healthy life :) )

Configuration

The setup of Wifi, Online Reporting and other options is done by connecting the device via a Micro USB cable to a Windows or Mac computer and then installing a Chrome App. Afterwards the device can work standalone

Connectivity

The list of supported connectors is growing, mainly based on customer demand. Currently the following ones are supported:

• Custom HTTP Server
• Custom MQTT Server

Predefined Servers

• Thingspeak HTTP
• Ubidots HTTP
• SAP HCP HTTP

The update interval and threshold are user configurable

Technical Specification