Vaisala - Company Announcement

Vaisala signs a significant upper-air sounding equipment contract

Vaisala Oyj                       Stock exchange release
                                            27.2.2009 at 10.00 am


Vaisala has signed a contract with a long standing customer for
upper-air sounding equipment.  The contract is valued at 8.6 million
USD and the deliveries are expected to take place by the end of the
first quarter in 2010.

Vaisala's upper-air sounding equipment is used all over the world to
measure weather in the Earth's atmosphere, from the boundary layer to
the upper atmosphere.

Vaisala is a global leader in environmental and industrial
measurement. Building on more than 70 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 meteorology, weather critical operations and controlled
environments. Headquartered in Finland, Vaisala employs over 1200
professionals worldwide and is listed on the NASDAQ OMX Helsinki.
www.vaisala.com

More information
Antti Ritvos, Vice Executive President, Weather Critical Operations,
tel. +358 40 5047 555