Achieve optimal conditions in your greenhouse, indoor grow or hydroponics farm by using this smart sensor as your CO? monitor. Packed with features to help you give your plants the best environment, it is able to measure CO? concentration, relative humidity, temperature, as well as detect light.

For added convenience, the automatic light sensor gives you the option to enable easy switching between day and night mode! If you?d rather set the sensor manually, then you can use the reliable DIP switch to set it to non-stop day mode.

Additionally, you have the option to manually calibrate the sensor in fresh air at 400ppm by using one of our CO? controllers. The sensor comes equipped with a dedicated DIP switch in order to prevent unwanted calibration.

The S-4 is fully compatible with most TechGrow controllers.

Key Features
Accurate measurements of carbon dioxide concentration, relative humidity and temperature in your room every second
Highly precise Non-Dispersive Infrared (NDIR) Sensor
Built-in Light Sensor
Automatic switching between day and night mode
Built-in light sensor can be set to non-stop day mode (manually set)
Manual calibration & test function for the CO? sensor
Calibration with calibration gas (only by TechGrow)
Key Specs
Measurement range: 0ppm ? 2000 ppm
Adjustabilty: increments of 10 ppm
Temperature range: - 40 ?C to 100 ?C
Rate of measurement: every second
Connectivity: 1 UTP port
Compatible with most Techgrow controllers