PRODUCT FEATURES: - Perfect for long term installations; no need to go back and replace the ballast at a later time. - Best system efficiency; no additional power consumption from the ballast. - Entirely safe to install; an embedded switch is used to validate connection before locking tube into place. Therefore, power will come through only once it is safely installed, eliminating any risk of electrical shock. • No need to change sockets; can operate with shunted and non-shunted sockets.