Products, Testo, Transmitters

Transmitter for Greenhouses and Laboratories – testo 6631


The testo 6631 transmitter was developed specially for monitoring critical ambient conditions in greenhouses, e.g. for bio research purposes. Precise and reliable humidity measurement is indispensible in these applications, in order to avoid costs caused by failed experiments.
Process security and system availability, among the most important factors in experimental plants, are supported by a number of properties of the testo 6631 bio research transmitter.


• Transmitter with precise Testo humidity sensor that has long-term stability (±2.5 % RH)
• 2 analog outputs (humidity/temperature)
• Integrated ventilator enables flow impact onto the sensor for recording an averaged climate in the greenhouse cell
• Protection of electronics and sensor from humidity influences (such as sprinkler irrigation)

Delivery Scope

testo 6631 humidity/temperature transmitter for greenhouses and laboratories (measuring traffic lights) with selectable signal outputs and optional display (depending on the configuration).


Download Datasheet Instruction manual

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