The invention provides a modular network sensor assembly operable to sense environmental conditions at a computer or equipment rack. The network sensor assembly includes a flexible body operable to be folded along a central fold line. The central fold line separates the flexible body into a first panel and second panel. A number of mounting tabs are hingedly attached to either the first panel or second panel. These mounting tabs are operable to secure the network assembly to the computer rack. A number of sensor tabs are located along the central fold line. Addressable sensors capable of sensing environmental conditions are positioned proximate to the sensor tabs, and communicatively coupled to a common bus. A memory device is also communicatively coupled to the common bus and is operable to store configuration information and data associated with the sensed environmental conditions sampled by the addressable sensors.