The light source direction can be adjusted. This light is fitted with a dimmer switch. This light requires 1 bulb(s) of the same type: 1 x G9 Capsule (Included) Max Bulb Wattage = 40W Bulb Voltage = 240V This product requires an input voltage of 240V As this light has a fitted dimmer it should not be installed on to any other dimmer controlled circuit. It may however be fitted to a switched circuit, this however might mean the light still need individually switching on again after being externally switch off.