SPR-221 True RMS Multimeter & Insulation Tester: Reliable Electrical Testing in One Tool
Electrical testing requires accuracy, safety, and versatility—especially when working with live circuits, motors, panels, and insulation systems. Using separate devices for insulation testing and standard electrical measurements can slow down work and increase risk.
The SPR-221 True RMS Multimeter & Insulation Tester combines advanced electrical measurement functions with insulation resistance testing in one professional handheld instrument, making it an ideal solution for electricians and maintenance engineers.
What Is the SPR-221?
The SPR-221 is a professional True RMS digital multimeter with built-in insulation testing, designed for comprehensive electrical diagnostics. It supports AC/DC voltage and current measurement, resistance, continuity, frequency, capacitance, temperature, and insulation resistance testing.
With safety-focused design and clear digital display, the SPR-221 is built for daily field work in industrial, commercial, and utility environments.
Main Measurement Functions
- AC / DC Voltage (True RMS)
- AC / DC Current
- Resistance Measurement
- Continuity & Diode Test
- Capacitance
- Frequency & Duty Cycle
- Temperature Measurement (Type-K)
- Insulation Resistance Testing
Insulation Testing Capability
The SPR-221 features dedicated insulation test modes, allowing technicians to evaluate cable and equipment insulation health safely and efficiently. This is essential for preventive maintenance and fault detection before failures occur.
- Selectable insulation test voltages
- Clear insulation resistance display
- Lock function for continuous insulation testing
- Built-in safety warnings for high-voltage testing
Key Features
- True RMS measurement for accurate readings on complex waveforms
- Large LCD with dual display and bar graph
- MAX / MIN, HOLD, and PEAK functions
- Data storage and recall capability
- Backlight for low-light environments
- Safety-rated design suitable for professional electrical work
Typical Applications
- Electrical installation and commissioning
- Motor and transformer insulation testing
- Industrial maintenance and troubleshooting
- Facility and building electrical inspections
- Electrical panels and power distribution systems
Why Choose the SPR-221 from SPARTNA?
- Multimeter and insulation tester in one compact device
- Reliable accuracy for professional electrical diagnostics
- Improved safety during insulation and high-voltage testing
- Backed by SPARTNA local support and warranty
The SPR-221 is an excellent choice for professionals who need a dependable, multi-function electrical testing instrument that combines everyday measurements with advanced insulation diagnostics.
Explore the SPR-221 Multimeter & Insulation Tester
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