
Comprehensive environmental intelligence and premium monitoring for serious hobbyists.
Budget
Est. $700 – $1,500
Products
6 included
Best for
Advanced growers
Every product links to its full Chill420 buyer's guide so you can compare options before deciding.


Tracks temp, RH, VPD, CO₂ and light intensity across multiple zones with long-term cloud history — single source of truth for sealed-room and CO₂ grows.

High-accuracy multi-zone humidity tracking with VPD calculation and cloud logging — humidity targets driven by data, not guesses.

Open API and per-zone automations with local fallback — full temp, RH, VPD and exhaust automation that keeps working even if the cloud goes down.

Lab-grade accuracy with onboard data logging and app sync — see real trends across days and weeks instead of just point-in-time readings.

Multi-sensor system with smart-home integration and CSV export — sensors become triggers for fans and dehumidifiers, not just readouts.