Multi-gas detector can simultaneously detect up to seven gases including, flammable gases, vapors and oxygen. It is suited for use in chemical, oil and gas, mining, pharmaceutical and water treatment applications. The compact design can be used with one hand, and the mobile device can be converted to a fully functional area-monitoring device. Practical functionality allows switching between pump and diffusion mode by user, saving energy and increasing the operating time of the device without requiring factory modification. Inductive charging makes the system less vulnerable to water, dust and dirt. It includes smart assistants for clearance measurement, leak detection and benzene-specific testing with the PID (with accessories).