The Vaisala Indigo series includes versatile transmitters and handheld devices designed for use with Indigo-compatible probes. This includes the Indigo 500, 300, and 200 models as well as the portable handheld device Indigo 80. Indigo transmitters act as host devices for standalone, intelligent probes, enabling precise measurements in various industrial applications through their flexible connectivity and intuitive operation. A transmitter with a local display is particularly helpful in case of uncertainties, problems, or maintenance work on-site, as the probe data is displayed directly on the display. All Indigo probes are compatible with every Indigo transmitter, and probe replacement can be performed without interrupting the process to minimize downtime.

The modular Indigo 500 series from Vaisala is ideal for demanding applications. It supports intelligent probes for measuring humidity, temperature, CO₂, or H₂O₂ and offers advanced communication options (Modbus TCP/IP, Ethernet) along with an intuitive touchscreen display. Its modular design allows users to select the appropriate components for their needs. Leading sensor technology and a durable construction ensure precise and stable measurements. The user-friendly plug-and-play design simplifies installation, calibration, and maintenance. Users can access measurement data and adjust probe configurations, enhancing real-time monitoring and control. The probes support Modbus RTU over RS-485 for flexible connectivity, while the transmitters provide additional options such as analog and relay outputs. These features make the Indigo 500 series a reliable solution for a wide range of industrial applications.

The Vaisala Indigo300 is a versatile industrial transmitter that works with a wide range of Indigo-compatible probes to measure parameters such as humidity, temperature, dew point, carbon dioxide, vaporized hydrogen peroxide, and oil moisture. Its durable metal housing with IP65 protection and preconfigured analog output interface (mA, V, or both) makes it ideal for demanding industrial applications. The probes can be mounted tool-free using a locking wheel and easily replaced when needed, allowing for flexible adaptation to different measurement tasks. A clear display with push buttons simplifies navigation between numerical and graphical measurement data. Additionally, device configuration can be performed via the service interface and the free Vaisala Insight software, enabling quick and easy adjustments to changing requirements.

The Vaisala Indigo200 is a versatile industrial transmitter compatible with all Indigo-compatible probes for measuring parameters such as humidity, temperature, dew point, carbon dioxide, and vaporized hydrogen peroxide. Its durable IP65-rated housing protects against dust and most chemicals, making it ideal for use in challenging operating conditions. The smooth surface facilitates easy cleaning. The Indigo200 enables straightforward data analysis and visualization, including wireless access via Wi-Fi, and supports easy installation as well as tool-free probe replacement, helping to minimize downtime.

The Vaisala Indigo80 is a handy, mobile display device with data logging functionality that supports up to two Indigo-compatible probes or transmitters simultaneously. It is particularly suitable for temporary measurements, process monitoring, sensor configuration, and calibration and maintenance tasks. Its durable aluminum housing protects against chemicals and dust, allowing the device to operate reliably even under demanding conditions. The powerful lithium-ion battery provides up to 10 hours of runtime, while the multilingual and user-friendly interface ensures easy handling. Additionally, the recorded measurement data can be conveniently transferred to a PC using the Vaisala Insight Software.