The Mission Torus Dimmer switch allows you to alter the amount of bright white that floods your dartboard, enabling a truly personal set up. Mission Torus Dartboard Lighting Dimmer Switch. Simply connects to the LED Lighting System to allow light to be adjusted to your preference. Works on most systems including Mission Torus, Bulls Termote and Target Lighting Systems. Mission Torus Dimmer Switch – for Lighting Systems – Dimmer