# Grow Sensor

> Grow room monitoring for commercial facilities: canopy climate, true leaf VPD and substrate sensing. Free app. No contract required to start.

Grow Sensor builds calibrated canopy and root-zone instruments for commercial grow rooms. Hardware and the free app need no contract; GrowOps is optional facility software.

## Pages

- [Home](https://growsensor.co/): What Grow Sensor is and why facilities use it
- [Pricing](https://growsensor.co/pricing): Hardware and GrowOps rates for facilities
- [ROI calculator](https://growsensor.co/roi): Model payback on your rooms
- [Shop](https://growsensor.co/shop): Grow Sensor PRO, SubSense, and complete systems
- [About](https://growsensor.co/about): UK team building instruments for commercial rooms
- [Blog](https://growsensor.co/blog): Guides on crop steering, VPD, substrate, and monitoring
- [FAQ / docs](https://faq.growsensor.co/): Setup, support, and product documentation