The entire operation of the device is designed keeping in mind the simple nature of sanitation workers and cleaning staff in developing world such as the Indian Subcontinent. Just plug in the device in 13A wall socket, switch on the power and use the remote control (or button on display) to start the machine after vacating the room. The machine stops itself after the programmed dosage is completed. Then simply move it the next desired location and repeat! With the long lasting Lamps and Ballasts tested for up to 13,000+ hours, there are no recurring consumables. Servicing windows are placed at strategic locations on the machine give easy access to the critical components in the unlikely event of needing any servicing at all. This robust machine is made for tough environmental conditions, like high humidity, temperatures and dust and also to sustain the less than perfect handling.