testo 6621 humidity-/temperature transmitter, accuracy &plusmn;2.0 %RH, wall or duct version, selectable signal outputs, optional display, external interface for adjustment and setup, 2 analog outputs<br />
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<strong>**NOTE: Please contact Testo to ensure proper configuration when ordering the testo 6621 Transmitter**</strong>

The testo 6601 temperature and humidity probe is designed for monitoring critical indoor climates.

The testo 6602 temperature and humidity probe is designed for measurements in air conditioning ducts.

The testo 6603 temperature and humidity probe is designed for measurements in air conditioning ducts, is equipped with a high-precision, long-term stable humidity sensor from Testo and delivers precise measurement results.

The testo 6604 temperature and humidity probe is designed for measurements in processes that are difficult to access.

The testo 6605 temperature and humidity probe is equipped with a high-precision, long-term stable humidity sensor from Testo and delivers precise measurement results.

The testo 6611 temperature and humidity probe is designed for monitoring critical indoor climates.

The testo 6612 temperature and humidity probe is designed for measurements in air conditioning ducts.

The testo 6613 temperature and humidity probe is designed for measurements in processes that are difficult to access.

Metal protection cage, Ø .47" for humidity probes, material: stainless steel V4A. Quick adjustment time, robust and temperature-proof. Used when measuring velocities of less than 32.8 fpm.

Metal protection cage, Ø .47 " for humidity probes - "Metal protection cage, diam. 0.8"""

Metal protection cage, Ø .47 " for humidity probes - "Metal protection cage, diam. 0.8"""