The Elta 149-DST1 is a duct-mounted humidity sensor designed for accurate humidity monitoring within duct systems. Operating at 220 – 240VAC and 50/60Hz, it covers a temperature range of 0 to 90°C. The sensor is suitable for controlling heating or cooling applications and can handle rated fan loads up to 4A. It features a durable 280mm probe length, ideal for effective humidity sensing in ductwork environments.