The Series I2-4 Weatherproof Immersion Temperature Sensor is ideal for monitoring hot and chilled water lines feeding Air Handlers and Cooling Towers. The plastic housing has a 1/4 turn twist off cover to reduce installation time. The multiple knockouts allow for easy conduit access to any side of the housing. The Series I2-4 can be ordered with a choice of 11 output options that allow it to communicate to any standard building control system.