Jumo India Pvt Ltd offers Warm-Air Thermostats. Jumo India Pvt Ltd is DIN EN ISO 9001 and DIN EN ISO 14001 certified company. Warm-Air Thermostats are manufactured as "Warm-air thermostats [TR/TW/STB], Series WTHc with Microswitch for warm-air heating systems in accordance with DIN 4794". The thermostats in the WTHc series are suitable for application in warm-air heating. They consist of 3 separate sensing and switching systems that can function as temperature controller TR, temperature monitor TW and safety temperature limiter STB. In fault condition, the STB sets the system being monitored to a safe operational state. Warm-Air Thermostats operate on the principle of liquid expansion. Micro-switches of these thermostats serve as the electrical switching devices.