Jumo India Pvt Ltd offers Explosion-Protected Surface-Mounting Thermostat. Jumo India Pvt Ltd is DIN EN ISO 9001 and DIN EN ISO 14001 certified company. Explosion-Protected Surface-Mounting Thermostat are available as "Explosion-protected surface-mounting thermostat [TW/STW] Series ATH-Ex for explosive gas atmosphere Zone 1 and explosive dust atmosphere Zone 21". They can be used directly in the hazardous area [zone 1 and zone 21]. The thermostats are available both as temperature monitor TW and temperature monitor STW [fail-safe]. The Explosion-Protected Surface-Mounting Thermostat operates on the principle of liquid or gas expansion. The electrical switching device is a micro-switch inside a flameproof enclosure.