the HCT-3b is a high-quality active ventilated Co2, temperature, and humidity sensor unit that is specifically designed for situations that require reliable measurements and control. The unit is used in combination with the CTgrow controller, which gives users full control over the measurements. The sensor is housed in a special casing that offers maximum protection without compromising the measuring capability.

This unit is designed to bring the highest accuracy without any adjustments needed, it's automatically calibrated within the digital signal output of the Co2, temperature, and humidity combined sensor. This technology ensures a sensor unit with high reliability and excellent long-term stability, making it a great option for those who need accurate and dependable measurements.

HCT-3 Additional Features:

• Uses an extremely high-quality (NDIR) Co2 sensor
• Very reliable and accurate digital humidity sensor
• Precise and accurate digital Air-Temperature sensor
• Comes with 4 screw holes for easy wall mounting
• Fast & easy installation procedure.
• can also be hung from a ceiling or fixture
• Build with only the highest quality parts
• Very reliable and accurate sensing capability
• Uses only high-quality Industrial digital sensors

HCT-3 Specifications: