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FNIRSI S1 Large Screen Digital Display Smart Multimeter — True RMS

FNIRSI S1 Large Screen Digital Display Smart Multimeter — True RMS
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FNIRSI S1 Large Screen Digital Display Smart Multimeter — True RMS

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Description

The FNIRSI S1 is a compact smart digital multimeter featuring a large dual-display LCD with up to 9,999 counts, designed for convenient electrical testing and troubleshooting in electronics, DIY, and maintenance applications. It supports AC and DC voltage measurement, resistance, capacitance, frequency, temperature, continuity, and diode testing — all accessible through a single cyclic mode button. Its Automatic Measurement mode intelligently identifies and measures AC/DC voltage, resistance, and continuity without manual range selection, making it equally suited to beginners and experienced technicians. True RMS capability ensures accurate readings on non-sinusoidal waveforms produced by inverters and switching power supplies.

Powered by a built-in rechargeable battery with USB Type-C charging, the S1 eliminates dependence on disposable batteries and is well-suited to fieldwork and portable use. Additional practical features include a built-in flashlight for low-light environments, NCV non-contact voltage detection, LIVE wire detection, Data Hold, intelligent anti-burning protection, and on-screen overload and low-battery alerts. The device is available in Blue and Yellow colour variants and ships with test leads and a user manual.

For engineers, technicians, and electronics hobbyists across Pakistan, the FNIRSI S1 offers a modern, rechargeable multimeter at an accessible price point. Whether used in a Karachi electronics repair shop, a residential wiring inspection, or a college engineering lab, the S1’s auto-measurement capability and readable large-screen display make it a practical and reliable everyday instrument.

Why Choose the FNIRSI S1?

Pakistan’s electronics repair technicians, solar installers, HVAC professionals, and engineering students need a multimeter that is fast, safe, and simple to operate without sacrificing measurement breadth. The FNIRSI S1’s AUTO mode removes the need for manual range selection — a genuine advantage in busy repair environments in markets like Saddar or Ranchore Line, Karachi, where speed matters. Its NCV and LIVE wire detection functions add meaningful safety when working around live circuits, particularly in buildings with non-standard or ageing wiring. The USB Type-C rechargeable design means the meter is always ready without the recurring cost and inconvenience of disposable batteries, making it a sensible long-term investment for daily professional use.

FEATURES

  • 9,999-count dual-display LCD delivers high-resolution, clearly legible readings across all supported measurement functions, with two values shown simultaneously for added context.
  • Automatic Measurement mode (AUTO) detects and measures AC/DC voltage, resistance, and continuity without manual range selection, reducing setup time and the risk of incorrect range entry.
  • Supports AC voltage, DC voltage, resistance, capacitance, frequency, temperature, continuity, and diode testing in a single handheld device.
  • True RMS measurement delivers accurate readings on non-sinusoidal and distorted AC waveforms, as found in circuits driven by inverters, variable-speed drives, and switching power supplies.
  • NCV non-contact voltage detection senses the presence of AC voltage without direct probe contact, improving operator safety around live conductors.
  • LIVE wire detection alerts the user to energised conductors during electrical inspections and fault-finding.
  • Intelligent anti-burning protection provides overload safeguarding on measurement inputs, protecting both the instrument and the operator from accidental high-voltage exposure.
  • Built-in flashlight illuminates dark workspaces such as distribution boards, cable ducts, and under-panel areas.
  • Data Hold function freezes the current reading on screen, allowing the user to note measurements without maintaining probe contact.
  • USB Type-C rechargeable power supply eliminates disposable batteries; the meter charges via any standard USB-C source.
  • On-screen overload and low-battery indications alert the user to measurement overrange conditions and when charging is required.

SPECIFICATIONS

  • Display: Large dual-display LCD, up to 9,999 counts
  • Measurement modes: AUTO (automatic) and Manual
  • AC voltage measurement: Supported
  • DC voltage measurement: Supported
  • Resistance: Supported
  • Capacitance: Supported
  • Frequency: Supported
  • Temperature: Supported
  • Continuity test: Supported (with audible alert in AUTO mode)
  • Diode test: Supported
  • True RMS: Supported
  • NCV detection: Supported (non-contact voltage sensing)
  • LIVE wire detection: Supported
  • Data Hold: Supported
  • Built-in flashlight: Supported
  • Charging port: USB Type-C (rechargeable)
  • Anti-burning protection: Supported
  • Overload indication: Supported
  • Low-battery indication: Supported
  • Current (amperage) measurement: Not supported on this model
  • Operating temperature: -5°C to 40°C
  • Storage humidity: Up to 80% relative humidity
  • Colour variants: Blue / Yellow (Yellow currently sold out)
  • Warranty: 2 years (direct purchase via fnirsi.com); 30-day return and refund guarantee

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