1. The FLUKE 1663 UK Multifunction Installation Tester is a reliable and efficient tool designed for testing electrical installations in accordance with UK regulations. This tester offers a wide range of testing capabilities, including loop impedance, RCD testing, insulation resistance, and continuity testing. With its user-friendly interface and clear display, the FLUKE 1663 UK Multifunction Installation Tester is ideal for both professional electricians and DIY enthusiasts looking to ensure the safety and compliance of their electrical installations.