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Multifunction Installation Tester Comparison - April 2026

3 Best Multifunction Installation Tester In the UK

1
Best Choice
9.8Exceptional
2
9.6Exceptional
3
9.4Excellent
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Model

Fluke 1664 FC Electrical Installation Tester with Fluke Connect
Model
18th Edition Compliant Fluke 1664FC Multifunction Installation Tester Set Plus Earth Spike Kit
Model
UNI-T UT593 UT595 Multifunction Installation Testers test RCD, loop/line impedance, earth resistance continuity, insulation resistance and AC/DC voltage(UT593)

Brand

Fluke Networks
Brand
Fluke
Brand
UNI-T

Reviews

16 reviews
Reviews
-
Reviews
-

Tech Specs

color

Yellow, Black
color
Yellow, Grey
color
White

Available On

Available On
Available On

Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you
  • 9.8
    1
    Fluke Networks

    Fluke 1664 FC Electrical Installation Tester with Fluke Connect

    Why we love it

    Easy Digital Display
    High Insulation Resistance
    Measures Moisture/Resistance
    Main highlights
    • Resistance of/moisture levels insulation, walls = Yes
    • Limit value display = No
    • Insulation Resistance measurement with ramp function = Yes
    • Insulation Resistance measurement = Yes
    • Display = Digital
  • 9.6
    2
    18th Edition Compliant Fluke 1664FC Multifunction Installation Tester Set Plus Earth Spike Kit
    Fluke

    18th Edition Compliant Fluke 1664FC Multifunction Installation Tester Set Plus Earth Spike Kit

    Main highlights
    • The Fluke 1664 FC Multifunction Installation Tester helps expedite installations The 1664 FC puts a lot of testing power in your hands to quickly and efficiently test to all local regulations, protect appliances, and share test results in real time over your smartphone.
    • Test EV charging station RCD type A-EV or RDC-DD DC protection devices Perform tests on EV charging station DC protection devices using the RCD type B (smooth DC currents) VAR mode, which generates the test currents for RCD type A-EV or RDC-DD acc. to IEC 62955 (6/60/200 mA and ramp <2 to 6 mA ramp). This allows the quick an easy testing of additional 6 mA DC monitors on charging points and can be used in conjunction with the Fluke FEV100 or FEV300.
    • Protect appliances from accidental damage The Fluke 1664 FC is the only tester with ""Insulation PreTest"" that stops the insulation test and provides a visual warning if it detects that an appliance is connected to the system under test. This helps you avoid potentially serious and costly mistakes that can cause damage to your customers’ peripheral equipment.
    • Comes with an Earth Spike Kit Kit allows easy earth resistance testing using the 3 wire connection method and auxiliary earth spikes.
    • Auto Test reduces test time Auto Test performs up to seven installation tests in one sequence, ensuring compliance with local installation regulations. This reduces the number of manual connections, thus decreasing the possibility of errors and reducing test time.
  • 9.4
    3
    UNI-T UT593 UT595 Multifunction Installation Testers test RCD, loop/line impedance, earth resistance continuity, insulation resistance and AC/DC voltage(UT593)
    UNI-T

    UNI-T UT593 UT595 Multifunction Installation Testers test RCD, loop/line impedance, earth resistance continuity, insulation resistance and AC/DC voltage(UT593)

    Main highlights
    • ● RCD trip trigger current test ● Phase sequence and missing test ● AC/DC voltage auto check and test ● Connection check with status real-time display ● White backlight; auto power off
    • ● Loop impedance/Prospective Fault Current (PFC)/Prospective Short Current (PSC) test ● Lock test ● RCD trip time test and the data storage with one key
    • ● Full/Half wave and count downing (30s) test mode selectable ● 0°/180° phase angle option to detect the fastest trigger time ● Trip current test of RCD trip time X2
    • ● 9999-count LCD display with analogue bar ● 250V~1000V DC insulation resistance test ● 200mA earth-resistance continuity test
    • UT590 Series Multifunction Installation Testers Certifications: CE

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