The CT-4XX Series Transmitter by EMS Kontrol is a compact and durable device designed to accurately monitor carbon monoxide (CO) levels in indoor environments. With multiple output options, easy installation, and replaceable sensors, it is ideal for ventilation control, indoor air quality monitoring, and gas safety applications.

Function and Output Options
The CT-4XX series supports three output types for seamless integration with industrial and building automation systems:

- CT 401: Analog 0–10 V output

- CT 441: Analog 4–20 mA output

- CT 461: Digital RS-485 Modbus RTU output

It enables real-time measurement and control of carbon monoxide levels for HVAC systems, parking garages, commercial buildings, and safety-critical areas.

Measurement Range and Accuracy

The CT-4XX Series offers precise carbon monoxide measurement across a wide range of 0 to 1000 ppm, making it suitable for both residential and commercial applications where indoor air quality and gas safety are critical. With a sensitivity of ±1 ppm and accuracy up to ±5 ppm, the transmitter ensures reliable and consistent performance, even in environments with fluctuating CO levels.

Construction and Installation
The transmitter features a durable ABS IP67-rated enclosure (excluding the sensor), making it resistant to dust and moisture. Its compact design ensures easy installation and maintenance, while the sensor module is replaceable, reducing long-term costs.

Designed for wall mounting, the CT-4XX series is lightweight and space-efficient, ideal for confined or industrial spaces.

CT-401 Carbon Monoxide Transmitter With Display – Technical Features
- Measuring Range: 0–1000 ppm CO

- Accuracy: ±5 ppm

- Output Signal: 0–10 V DC

- Power Supply: 12–24 V DC

- Sensor Life: 2 Years

- Protection Class: IP67 (excluding sensor)

With its high accuracy, flexible outputs, and user-friendly design, the CT-4XX Series provides a reliable and cost-effective solution for carbon monoxide detection in modern building management and safety systems.