The Megger MST220 is a reliable, plug-in socket tester for UK 13A BS1363 outlets designed to quickly identify common wiring faults using both visual LED indicators and an audible tone. Whether you're replacing sockets or fault-finding during installations, this tester helps UK electricians save time and stay compliant with BS7671 regulations.
Ideal for fast checks before formal inspection and testing, the MST220 detects over 17 different fault types including missing earth, neutral/live reversal and open circuits making it a smart addition to any electrician’s toolkit.
Ready to Spot Wiring Faults Instantly?
If you're testing after socket replacements or suspect a wiring issue during appliance installation, the MST220 gives you instant results. Its tri-colour LED system makes fault diagnosis clear, while the audible warble alerts you to any unsafe wiring setup.
Order today to enjoy free delivery, expert support and our 90-day satisfaction guarantee. Need advice? Our team is here to assist you.
Why choose Instrotech for your electrical test equipment?
With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:
Free UK shipping on all orders
Access to our knowledgeable technical support team
Available calibration services to maintain safety compliance
A 90-day money-back guarantee for complete peace of mind
We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.
