Kewtech LIGHTMATE KIT Lighting Circuit Adaptor Set (Set of all BC/ES/GU10/SES/SBC)Kewtech LIGHTMATE KIT Lighting Circuit Adaptor Set (Set of all BC ES GU10 SES SBC) Our universal LIGHTMATE testing adapters enable fast access to lighting points with secure connections provides better testing results and is much, much safer! Key Benefits: Faster, safer testing at light fittings Universal adapters work with standard 4mm connections Key Features: BC, ES, SBC, SES & GU10 adapters Enables Loop Impedance, and R1 & R2 testing at light