Product Highlights
Self Adjusting
Live AQI and Climate
15 parameters tracked live
Up to 7 hours
SENTRY
You cannot protect your family from a threat you cannot measure. SENTRY monitors 15 environmental parameters in real time, including carbon monoxide, formaldehyde, and particles as small as PM0.3, far finer than the commonly reported PM2.5. These ultrafine particles can penetrate deeper into the lungs, making them among the most concerning pollutants to monitor.
Included with every purchase
What’s included
- A free second year of warranty Your first year's covered as standard. We add a second year, free of charge.
- Two filter sets, on the house Ready before your first change is due.
- A concierge, for as long as you own it Free for life WhatsApp reminders, priority support. Elsewhere, a paid subscription.
All three ship standard, nothing extra to buy or do.
Sentry spots the problem. Vortex fixes the drama.
Enter Details for GST Invoice:
Order will be billed at GST registered address
Free 1-Year Warranty
Free Exchange*
Secure Payments
*Please check our Returns and Refunds Policy
Product Highlights
Self Adjusting
Live AQI and Climate
15 parameters tracked live
Up to 7 hours
SENTRY
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
We offer two shipping options for your convenience:
Standard Shipping
Estimated delivery within 3–7 business days.Express Shipping
Estimated delivery within 1–2 business days for an additional charge of ₹300.Please note that delivery timelines may vary slightly depending on your location and external courier delays.
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Returns and Refunds
We currently do not offer returns or refunds once an order has been shipped.
A refund will only be processed if:
- The order is cancelled before it has been dispatched.
However, we do offer exchanges in the following cases:
- Manufacturing defects
- Items that arrive damaged or defective (photo evidence required)
To initiate an exchange, please refer to our Returns & Exchange Policy for detailed instructions and eligibility requirements.
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Contact Us
Need assistance? We’re here to help.
For any questions regarding your order, shipping, exchanges, or general inquiries, feel free to reach out to us through our contact page, email, or phone support.
Why families choose Sentry
You cannot fix air you cannot see. Most purifiers only measure particulate matter, the dust and smoke you'd notice anyway. They stay quiet about everything else in the room: the odors from cooking and cleaning products, the chemical fumes off-gassing from paint and furniture, the invisible pollutants that build up with the windows closed.
Sentry measures all of it. Formaldehyde, total volatile organic compounds, particles as fine as PM 0.3, in real numbers, at your actual location, not a green light that only checks the air right at the filter. That's a reading, not a report.
Know what's actually in the air before you decide how to clear it. That's the first purifier decision every family should make before buying one.
15 - point Intelligence
in one device
| Compare to BioGuard | ||||
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| BIOGUARD | Dyson Big+Quiet BP02 | Coway Airmega 250 | Philips AC4221 | |
| Price | Rs. 34,999 | Rs. 67,499 | Rs. 34,999 | Rs. 23,499 |
| CADR | 520 m³/h | CADR not published | ~400 m³/h | 600 m³/h |
| Coverage | Up to 1700 sqft | Up to 1076 sqft | Up to 930 sqft | Up to 700 sqft |
| Filtration | 7-layer filtration | HEPA + Carbon | 3-stage | 4-layer |
| Best in class | 1.9x pricier | Smaller coverage | Half the coverage |
See Your Air, In Real Time
SENTRY continuously tracks air quality, detecting invisible pollutants like CO₂, VOCs, and fine particles with high precision. Its real-time display keeps you informed, while integrated climate monitoring ensures optimal comfort. The same readings sync to your phone, so you can check the air in your home from anywhere. Designed for modern living, it works seamlessly alongside KyoAir purifiers to create a smarter, healthier indoor environment.
Cleaner Air. Zero Compromise
Product details
Specifications
CO₂ Range: 0–5000 ppm (±50 ±5%)
CO Range: 0–999 ppm (±10 ppm)
PM2.5 Range: 0–999 µg/m³ (±10 µg/m³)
PM1.0 / PM10 / PM0.3 Range: 0–999 µg/m³
HCHO Range: 0–1.99 mg/m³ (±0.05 mg/m³)
TVOC Range: 0–9.99 mg/m³ (±0.05 mg/m³)
Temperature Range: -10°C to 50°C (±2°C)
Humidity Range: 0–99% RH (±5%)
Battery: 2000mAh Lithium Polymer
Charging: DC 5V / 1A Type-C
Battery Life: Up to 7 hours
Working Voltage: 3.7V
Working Current: 260mA
Display: 2.8-inch TFT Screen
Weight: ~160g
Features
• 15-in-1 Environmental Monitoring System with advanced sensors measuring CO₂, CO, Formaldehyde (HCHO), Total VOCs, and particulate pollution levels
• Comprehensive Particle Detection tracking PM0.3, PM1.0, PM2.5, and PM10 for detailed air quality insights
• Real-Time Air Quality Index (AQI) Display for easy understanding of indoor air safety
• Smart Climate Monitoring tracking temperature and humidity for optimal indoor comfort
• High-Precision Environmental Sensors detecting toxic gases and common indoor pollutants
• Smart Digital Display showing real-time air quality status and environmental data
• Multi-Function Smart Device with date, time, alarm clock, and timer features
• Continuous Indoor Monitoring designed to work alongside KyoAir purification systems to indicate when purification is needed
Benefits
• Know Your Air Quality Instantly with real-time monitoring of the air you breathe
• Detect Hidden Indoor Pollutants including harmful gases and particles invisible to the human eye
• Healthier Indoor Environment helping maintain safer air conditions for families, children, and sensitive individuals
• Smart Lifestyle Integration combining air monitoring with everyday features like a clock and timer
• Perfect Companion for Air Purifiers designed to work alongside KyoAir systems for complete indoor air awareness and control without human intervention.
FAQs
Please read our FAQs page to find out more.