We present results of systematic studies of the radiation response of superhea droplet detectors, which are used in the PICASSO dark matter search exper detection technique is based on the phase transitions of superheated liquid Fre dispersed and trapped in a polymerized gel. Phase transitions can be induced b recoils following particle interactions and, in particular, interactions with Weakly Interacting Massive Particles (WIMPs). These detectors are threshold devi minimal energy deposition is necessary to induce a phase transition and their se to various types of radiation depends strongly on the operating temperature a The sens operating parameters and the results present a complete characterization of the response of detector modules alread a dark m