Electrical safety tested. On-off switch. Class 2 equipment, European conformity, 220-240 voltage, frequency 50Hz, supplied with a 25w bulb but can be used with bulbs up to 40w. Do not use near water. Please note that the oil burner does take around 10-20 minutes to heat up fully ready to melt wax and release the fragrance. Depth of dish – 2cm.