The slim multi-sensor PSM01 has three sensors - door/window, temperature, and illumination - in one device. It uses Z-Wave wireless technology to connect to a home automation network and controller. The device can detect door/window openings, temperature changes, and light levels, and report this information to the controller. It also has capabilities for controlling connected lights based on sensor readings and settings. The document provides detailed information on configuring, installing, and operating the multi-sensor device on a Z-Wave wireless home automation network.