Esser 761420 24 V Condensation Prevention Heater for Fireray ONE

A heater unit that prevents condensation from forming on the lens of the optical smoke detector in humid environments. Warm air circulated with the aid of a fan keeps the lens surface slightly warmer than the ambient air and makes it difficult for water droplets to adhere to the surface. It is powered by 24 V alternating or direct current and draws 20 W of power. It prevents false alarms caused by fog in locations such as cold storage facilities, enclosed swimming pools, and basement parking garages.