Modulus is a robot designed for adaptation to the widest possible range of applications with its modular Techno-Cake system, robot parts and accessories. Modularity, hence its name, is one of its principal characteristics. Available in three configurations - Base, Service & Security, and Moddy. The second Modulus configuration, the Service & Security robot, is obtained by fitting the Techno-Cake home-security and service unit onto the Base. The components allow the robot to signal the presence of smoke, gas, and intruders. Fitting the robot with a support attachment and plotter-device, the robot can utilize a humidity probe to detect water leaks. At the first sign of danger, it can inform a computer or trigger a built-in siren.