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ZOYI ZT-703S Firmware Upgrade Guide – Fix Insufficient Memory Error (Step-by-Step) 03/21/2026 20:27:22
There are 19 products.
Availability: 23 In Stock📟 The ZT-225 is a professional 25,000-count True-RMS digital multimeter designed for high-accuracy electrical and electronics testing. Its large display, auto-range function and robust build make it ideal for workshops, engineering labs, electricians and advanced DIY users. ⚡
It measures AC/DC voltage, current, resistance, frequency, capacitance and includes continuity and diode testing. With a spacious, easy-to-read LCD, it provides excellent visibility for bench work and detailed diagnostics. 🔧
UK stock with VAT invoice and fast delivery included. 🇬🇧
Availability: 15 In Stock🔧 The VC903 is a professional 6000-count True-RMS clamp meter designed for accurate, non-contact AC current measurement. It includes temperature testing, NCV detection and full multimeter functions, making it ideal for electricians, HVAC engineers and workshop technicians. ⚡
It measures AC current via clamp, plus AC/DC voltage, resistance, continuity, diodes and frequency. The backlit LCD and ergonomic design ensure excellent usability in all environments. 📟
UK stock with VAT invoice and fast delivery included. 🇬🇧
Availability: 12 In Stock🎨 The ZT-TC13 is a professional coating and paint thickness gauge designed for automotive inspections, detailing work and surface testing. It automatically recognises ferrous and non-ferrous metals and measures coatings from 0–1250 µm with high accuracy. 📏
Ideal for checking car paint, detecting repairs, assessing bodywork quality and inspecting powder-coated surfaces. Its clear LCD display and compact design make it perfect for workshops and mobile technicians. 🚗
Includes UK stock, fast delivery and VAT invoice. 🇬🇧
Availability: 15 In Stock🔧 The ZT-98 is a compact and reliable auto-range digital multimeter designed for home users, DIY enthusiasts and light professional use. With a clear 2000-count LCD display, it measures voltage, resistance, continuity and diode status with stable accuracy. 📊
Its lightweight design makes it perfect for everyday electrical checks, appliance troubleshooting, basic circuit work and portable testing. The auto-range function ensures quick and easy operation for beginners and technicians alike. ⚡
Supplied from UK stock with VAT invoice and fast delivery. 🇬🇧
Availability: 25 In Stock🌬️ The ZT-FS1 is a compact handheld anemometer designed to measure wind speed, temperature and humidity with high accuracy. Ideal for HVAC engineers, outdoor enthusiasts, drone pilots and workshop testing, it delivers fast, reliable readings on a clear LCD display. 📟
Its portable design makes it perfect for ventilation checks, airflow measurement, weather monitoring, camping and environmental testing. With multiple units, data hold and backlight, the ZT-FS1 is easy to use in any environment. 🔧
UK stock with fast delivery and VAT invoice included. 🇬🇧
Availability: 30 In Stock🌡️ The GM-550 is an industrial-grade infrared thermometer gun designed for fast, contactless temperature measurement from –50°C to 550°C. Featuring a bright backlit LCD, laser targeting and high-accuracy optics, it is ideal for HVAC, automotive repair, electrical work and home safety checks. 🔧
Simply aim, pull the trigger and read the temperature instantly — perfect for checking engines, radiators, bearings, heaters, insulation, ovens and more. 📊
UK stock with fast delivery and VAT invoice included. 🇬🇧
Availability: 36 In Stock📟 The ZT-980E is a large-size 6000-count True-RMS digital multimeter designed for technicians, electricians and electronics repair. It includes a transistor tester, AC/DC voltage and current measurement, resistance, continuity, diode and frequency testing. ⚡
The oversized display provides excellent visibility for bench work and detailed diagnostics. With auto-range selection and durable build, it is ideal for both professional and DIY use. 🔧
UK stock with VAT invoice and fast delivery included. 🇬🇧
Availability: 5 In Stock🖊️ The ZT-203 is a compact pen-type True-RMS digital multimeter designed for quick, one-handed electrical testing. With a 6000-count display, auto-range function and essential measurement modes, it’s perfect for electricians, field technicians and DIY users. ⚡
It measures AC/DC voltage, resistance, continuity, diode status and frequency with fast response and excellent portability. The slim design allows easy access to tight spaces, panels and control cabinets. 📟
UK stock with VAT invoice and fast delivery. 🇬🇧
Availability: 25 In Stock🧰 The VC921 is a slim, foldable pocket-size True-RMS digital multimeter designed for technicians, engineers and on-the-go diagnostics. It offers voltage, resistance, continuity, diode and frequency measurement with fast auto-range performance. ⚡
Its compact folding design protects the probes and fits easily into pockets, tool bags or glove compartments. Perfect for field service, home repairs, appliance testing and portable electronics work. 📟
UK stock with VAT invoice and fast delivery included. 🇬🇧
Availability: 55 In Stock🔌 The ZT-E10 is a smart socket tester designed to quickly check UK 13A outlets for correct wiring, earth faults, polarity issues and live/neutral errors. It features a clear voltage display and built-in RCD trip function for enhanced safety testing. ⚡
Ideal for electricians, landlords, DIY users and home safety inspections, the ZT-E10 provides instant visual feedback through its LED indicators and LCD voltage screen. Simply plug it in and read the results. 🔍
Supplied from UK stock with fast delivery and VAT invoice. 🇬🇧
Availability: 5 In Stock🔧 The ZT-QS9 is a high-performance True-RMS clamp meter designed for electricians, HVAC engineers and technicians. With a 6000-count display, inrush current measurement, peak hold and NCV detection, it offers professional-grade accuracy for a wide range of electrical diagnostics. ⚡
It measures AC current, AC/DC voltage, resistance, continuity, diodes and frequency with fast response and stable readings. The ergonomic clamp makes it ideal for quick testing without disconnecting wires. 📊
UK stock, fast delivery and VAT invoice included. 🇬🇧
Availability: 14 In Stock🚗 The ZT-219 is a True-RMS digital multimeter designed for automotive diagnostics and general electrical testing. It offers voltage, current, resistance, continuity, diode and frequency measurement, plus a built-in temperature function for engine and component checks. 🌡️
With its clear backlit LCD, fast auto-range system and durable design, it is perfect for car technicians, electricians, and DIY enthusiasts. The ZT-219 delivers accurate readings on both linear and non-linear loads. 📊
Supplied from UK stock with VAT invoice and fast delivery. 🇬🇧

