Vaisala - Company Announcement

Vaisala Oyj : Vaisala Signs 6.7 Million Euro Contract

Vaisala Corporation Stock Exchange Release October 27, 2011 at 2:15 p.m.

Vaisala has signed a contract with a long standing customer for upper air
observation products. The value of the contract is 6.7 million euros. The
deliveries start in November 2011 and end in 2013.

Radiosondes are meteorological devices that are used to measure pressure,
temperature, humidity, wind speed and direction in the upper atmosphere. The
radiosonde reaches an altitude of up to 30 kilometers and transmits continuous
data to ground equipment during its ascent. The ground-based sounding system
processes the data and converts it into meteorological weather messages.



Further information:
Kai Konola, Executive Vice President, Weather

Tel. +358 40 502 4900, kai.konola@vaisala.com



--------------------------------------

Vaisala is a global leader in environmental and industrial measurement. Building
on 75 years of experience, Vaisala contributes to a better quality of life by
providing a comprehensive range of innovative observation and measurement
products and services for chosen weather-related and industrial markets.
Headquartered in Finland, Vaisala employs approximately 1400 professionals
worldwide and is listed on the NASDAQ OMX Helsinki stock exchange.
www.vaisala.com





[HUG#1558692]