Flow velocity measurement made easy. Attractive promo kits and a FREE thermo-hygrometer offer is on now for a limited time.

Maintaining flow velocities in a ventilation duct and at duct inlets and outlets is of crucial significance for the effective and efficient functioning of ventilation and air conditioning systems.

With the versatile and compact portable measuring instrument testo 440, you have all air conditioning and ventilation systems safely and reliably under control. Intuitive measurement menus, a comprehensive selection of probes and practical accessories make the testo 440 an indispensable companion for all air conditioning and ventilation measurements.

With our attractive promo kits, you are immediately ready to start. Available only for a limited time!

When you buy from Provo Instrumentation either:

  • any of the testo 440 kits (Hot wire, 16mm or 100mm Vane kit, Lux kit, Humidity kit, CO2 kit or any of the ComboKits including testo 440 dP kits) OR
  • testo 417 funnel kit (0563 4172): for easy and precise volume flow measurement at vents

… you will receive our FREE* thermohygrometer the testo 605i: that connects to the testo 440 via Bluetooth giving you a more holistic overview of the system being measured. An essential tool for all A/C and refrigeration technicians.

* FREE items are via redemption only. Simply complete the form below to redeem. Promo period from 1 August to 31 October 2021. While stocks last.


How to easily redeem your free kit

  1. Purchase any testo Airflow promo kit listed above from Provo Instrumentation before 31 October 2021 Dealer Search
Purchase a testo Smart Probes kit
  1. Relax and receive your choice of FREE testo instrument
Receive your FREE testo 745 Non-contact voltage tester

You can register here


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Conditions of participation for the
Testo Bonus offer

The following conditions apply to the participation in the Testo Bonus offer ("Promotion").

  1. Organizer

The organiser of the promo is Testo SE & Co. KGaA, Testo-Strasse 1, 79853 Lenzkirch, Germany (“Organizer”). The promo will be handled by Testo Pty Ltd, Unit 11, 114-118 Merrindale Drive, Croydon South VIC 3136, Australia, the agency contracted to do so by the organiser.

  1. Promotional object

The object of the promotion is the granting of a cost-free give away with the purchase of a defined Testo measuring instruments and the subsequent registration with sending in a copy of the invoice receipt or delivery note.

  1. Eligibility for participation

Eligible for participation are natural persons resident in Australia. Employees of the organiser, affiliated companies and other companies involved in the conception and implementation of the promo, as well as their relatives, are excluded from participation. Participation is possible from the age of 18 years.

  1. Participation in the promotion

In order to participate in the promo, the participant must purchase a promotional instrument from Provo Instrumentation, in the period from 01 August 2021 and 31 October 2021, whether in his/her own name or on behalf of a company. The participant must then register here on the Promo page and verify the purchase with a copy of his invoice or delivery note.

After the registration has been checked and confirmed, the give away will be sent to the participant. The customer has the possibility to complete the registration by 30 November 2021.

Each participant can only participate once in the promotion for each purchased promotional device. Multiple participations with different or several address data as well as other manipulative measures lead to the immediate exclusion of the participant from the promotion.

In return for participation in the promotion, the participant agrees that the organizer may process his personal data for advertising purposes (including personal product recommendations).

  1. Give away

After a successful eligibility check, every participant receives a give away in the form a Testo instrument or promotional product. The agency sends the give away to the participant by post. The risk of loss passes to the participant when the item is handed over to a transport person and the participant accepts these conditions of participation. Registered participants who are entitled to participate will generally receive the give away within 30 working days of successful verification of their registration at the specified address. If the give away cannot be delivered twice, the participant may be excluded from the promotion. In the event of unexpectedly high demand, there may be delays in delivery.

A cash payment is excluded. The right to the give away is not transferable.

  1. Liability

The organiser is not liable for any damages which occur in the course of the implementation of the promo, unless the organizer or his/her agent has caused the damage through gross negligence or intention or has violated a contractual (cardinal) obligation. In the case of slight violation of cardinal obligations, the liability of the organiser is limited to predictable, contractually typical damages. Liability in the case of culpable damage to life, body or health due to malicious concealment of defects is unaffected. Liability according to the product liability legislation is unaffected.

  1. Data protection

The data from the participants recorded in the framework of the promotion will be recorded, stored and used for the implementation of the promotion. The complete data protection information for the receipt of application-specific information is contained in the data protection declaration at Privacy Policy

  1. Other

These conditions for participation are subject to Australian law, excluding international private law and the UN Convention on Contracts for the International Sale of Goods.