Turns your fan on when CO₂ rises. Off when the air is fresh.

No. VentPlus is completely plug-and-play. Simply plug your exhaust or fresh-air fan into the AC socket on the left side of the unit, set your CO₂ thresholds using the front-panel buttons, and it starts working immediately. No wiring or electrician required.

According to ASHRAE Standard 62.1 and WHO guidelines, CO₂ should ideally stay between 600 and 1,000 ppm. Above 1,500 ppm indicates poor ventilation and causes fatigue, headaches, and reduced concentration. VentPlus maintains this range automatically.

Yes. Use the front-panel ESC, UP, DOWN, and SEL keys to set your own Fan ON level (default 1,000 ppm), Fan OFF level (default 800 ppm), and beeper alert level (default 1,500 ppm) to suit your specific space.

VentPlus uploads real-time data — CO₂ level, temperature, humidity, local relay status, and Wi-Fi relay status — to a secure remote monitoring website via Wi-Fi. The website shows four graphs over any window from 1 to 24 hours, ending at a time you choose: CO₂, fan ON/OFF with total fan-on time, temperature and relative humidity. One click downloads the readings to Excel: date and time, CO₂ (ppm), temperature (°C), relative humidity (%) and relay status. It works in any browser on desktop or mobile — no app required. Readings from the last one year are available to download, and remote monitoring is free for the first year.

VentPlus uses an industrial-grade NDIR (Non-Dispersive Infrared) CO₂ sensor — the same technology used in professional air-quality instruments. It measures carbon dioxide directly and accurately (±(50 ppm + 5% of reading) after a 10-minute warm-up) and stays stable for years without the drift of cheaper chemical sensors.

The Wi-Fi Relay is an optional add-on for controlling a ventilation fan in a different room from the Main Unit. It communicates with the Main Unit over the internet — they do not need to be on the same Wi-Fi network. If your sensor and fan are in the same room, the Main Unit's built-in AC socket is sufficient.

Each VentPlus unit joins your Wi-Fi just like a mobile phone does, so the number you can connect depends on how many devices your router allows at the same time, not on VentPlus. Remember that phones, laptops and TVs on the same router also count. The limit is usually printed on the router's box or manual; if not, your internet provider can tell you. On a farm with many crop rooms, make sure the Wi-Fi signal reaches every room. If one router is not enough, a bigger router or a second router solves it. Nothing on VentPlus needs to change.

Yes. VentPlus is widely used in mushroom farms to control CO₂ at each growth stage and in greenhouses to hold the CO₂ enrichment band (400–2,500 ppm, user-settable). The relay can also control a CO₂ generator or solenoid valve via the AC socket.

A single VentPlus unit is suitable for areas up to 100 square metres. For larger spaces or multi-room installations, multiple units can be installed — each monitoring its own zone and controlling ventilation independently. The optional Wi-Fi Relay extends control to a second fan in a different room.

The VentPlus CO₂ Monitor & Controller Main Unit costs ₹8,499 and the optional Wi-Fi Relay Unit ₹2,499 — both inclusive of 18% GST and courier charges anywhere in India. Order online from our Shopify store, or contact Systellar Innovations at info@ventplus.in / +91 99170 80700 for bulk orders and multi-unit quotes.