Instrument offer lasts until June

Anyone buying a Testo 435 or a Testo thermal imaging camera before the end of June 2012 can save £100 - either off the purchase price or in the form of a Red Letter Day voucher.

The Testo 435 is a multi-function instrument that can measure all key parameters needed to determine indoor air quality and the efficient installation and maintenance of ventilation and air conditioning systems.

It can be used to measure CO2, RH and air temperature to ensure conditions are at the correct levels and that systems are working optimally. A wide range of cabled and wireless probes are available for measuring parameters, such as differential pressure, velocity, CO, turbulence/draughts and light.

The company's thermal imaging cameras can be used for electrical thermal surveys and the condition monitoring of electrical equipment and controls.