One tablet in this Electric Mosquito Killer will kill mosquitoes and flying insects in a room for up to 10 hours. Helps reduce the danger and annoyance of mosquito bites at night. Will begin to kill mosquitoes less than 1 minute after being plugged in. Suitable for worldwide use from any mains a.c power supply between 110 and 240 volts. No switching is required as this unit automatically adjusts to suit power supplied. Fits into standard round 2 pin sockets, as found in European countries, and is compatible with the Lifeventure travel adaptor.