L4935 - ALLIGATOR CLIP SET

True RMS AC/DC clamp multimeter for current measurement up to 2000 A in electrical maintenance and power systems testing. HIOKI CM4373-50 available now.

True RMS AC/DC clamp multimeter with 2000 A current range and Bluetooth for advanced electrical maintenance and testing. Engineered in Japan for precision measurement.

HIOKI CM4375-90 True RMS AC/DC clamp multimeter with 1000 A range and super slim jaws for precise measurements in panels and tight spaces. Order now from HIOKI Europe.

AC/DC True RMS clamp multimeter with 20 A and 600 A ranges for precise current measurement in electrical maintenance and testing. HIOKI CM4371-50 available now.

True RMS clamp multimeter with 1000 A AC/DC current range, voltages up to 1000 V AC/DC. CAT IV 600 V / CAT III 1000 V, 34 mm conductor diameter; resistance, capacitance, continuity, diode test, inrush, Bluetooth optional

True RMS AC/DC clamp multimeter with 20 A and 600 A ranges and Bluetooth for professional electrical testing. Japanese precision for high-accuracy measurement.

The CM3286-50 AC Clamp Power Meter is designed to measure AC current, voltage, and power with a broad range, from 5 W to 360 kW, and currents from 60 mA to 600 A. It offers quick and accurate readings with true RMS measurement and can measure simple integral power consumption and phase sequence. The device features a large jaw diameter of 46 mm, allowing it to measure large-diameter cables, and its backlit display ensures easy reading even in dimly lit environments.With Bluetooth® communication (available via the optional Z3210 wireless adapter), data can be easily transferred for analysis. This versatile tool is ideal for applications ranging from manufacturing plants to household measurements. Technical Details: Model: CM3286-50 Current Measurement Range: 60 mA to 600 A AC Voltage Measurement Range: 80 V to 600 V AC Power Measurement Range: o Single-phase: 5 W to 360 kW o Balanced three-phase 3-wire: 20 W to 623.5 kW o Balanced three-phase 4-wire: 40 W to 1080 kW Frequency Range: 45 Hz to 999.9 Hz Maximum Rated Voltage to Ground: 600 V CAT IV, 1000 V CAT III Operating Temperature: -25°C to 65°C Jaw Diameter: 46 mm Dimensions: 65 mm (W) × 241 mm (H) × 35 mm (D) Weight: 450 g Power Supply: 2 × LR03 Alkaline batteries (25 hours continuous use) Optional Wireless Adapter: Z3210 for Bluetooth® connectivity

Key Specifications5 test voltages from 50 V to 1000 V Insulation resistance up to 4000 MΩSafety category CAT III 600 V Digital bar graph display200 mA protective conductor test in accordance with EN 61557-4 Typical Applications Inspection and maintenance of low-voltage electrical installations Troubleshooting insulation faults in wiring, motors, and equipment Field testing of machinery, control panels, and distribution boards Periodic inspection of plant and equipment Feature IR4053 IR4056 IR4057-50 IR4057-90 IR4059 PVΩ Function Yes – Bar Graph Display – Yes Bluetooth – Optional (Z3210) Yes (Z3210 included) Optional (Z3210) Housing Integrated hard case Compact housing with silicone protector L9788-10 Test Lead with Remote Switch Optional Yes Detailed Product OverviewIn installation and maintenance work, insulation resistance testing is required when checking wiring, distribution boards, motors and electrical equipment after repairs or during periodic inspections. A dedicated insulation tester is often the practical choice without the need for a multifunction installation tester or combined test instrument. The IR4057-50 is a digital, battery-powered insulation tester with five test voltages from 50 V to 1000 V. It measures insulation resistance up to 4000 MΩ and is used for testing electrical installations, motors, machinery and control systems. The instrument complies with EN 61557 requirements for insulation resistance and protective conductor continuity testing in low-voltage installations.Digital Bar Graph and Fast PASS/FAIL Evaluation In addition to the numeric display, the IR4057-50 features a digital bar graph that provides immediate visual indication of insulation resistance during measurement. Changes in resistance are visible directly on the scale display. The integrated comparator evaluates the insulation measurement in approximately 0.3 seconds and indicates PASS or FAIL. PASS and FAIL are signaled acoustically, and in the event of a FAIL result, the display backlight turns red. The PASS/FAIL threshold can be set individually for each test voltage range and remains stored even after switching the instrument off or changing the range. With the comparator function switched off, the instrument instead displays the insulation resistance value after 60 seconds during an ongoing measurement. This supports time-based evaluation when longer test durations are required. Protective Conductor (PE) and Voltage CheckProtective conductor testing is performed with a 200 mA test current in accordance with EN 61557-4. The defined test current applies sufficient load to the protective conductor connection to detect increased contact resistance, loose connections and oxidized terminals. This provides a more reliable assessment than a low-current continuity check performed with a standard digital multimeter.In addition to insulation and low-resistance measurement, the instrument includes AC and DC voltage testing up to 600 V. This allows verification that the test object is not live before starting an insulation measurement. For added safety, the 500 V and 1000 V test voltages must be manually unlocked before the first measurement. This prevents accidental activation of higher test voltage levels. For Daily Field Work The IR4057-50 complies with CAT III 600 V and has been tested for a 1 m drop onto concrete. It is specified for operation in ambient temperatures from -25 °C to 65 °C. The instrument is integrated into a robust hard case that forms a single protective unit and provides storage space for test leads and accessories. The leads remain connected during transport, allowing the tester to be stored and carried as one complete unit.The display offers high contrast and includes a backlight for work in distribution boards and poorly lit technical rooms. With the optional Z3210 wireless adapter, measured values can be transferred via Bluetooth to the free GENNECT Cross app on iOS or Android devices. An optional L9788-10 test lead with integrated LED illumination and measurement trigger allows measurements to be started directly from the probe.Like all HIOKI insulation testers, it is designed and made in Japan at HIOKI’s own factories in Nagano Prefecture.

HIOKI DT4261 Digital Multimeter with True RMS AC V/A, 10 A direct input and CAT III 1000 V/CAT IV 600 V safety. Optional Bluetooth®. Order now.

Digital insulation tester with Bluetooth® and five test ranges (50–1000 V) for fast, accurate measurements in lab and industrial environments. Order now from HIOKI Europe.

Key Specifications2 isolated analog channels with BNC inputs 1 MS/s sampling rate, 12 bit resolution, DC to 50 kHz bandwidth RMS data logging with up to 1000 values per second Voltage measurement: 100 mV to 500 V, 12 ranges2 MWords internal memory per channel, removable memory card storage Typical ApplicationsCapture voltage drops, spikes, and transient power issuesDetect short voltage or current deviations over long periods using RMS logging Record inrush currents and motor control timing Diagnose PLC, relay, and control signal behavior Detailed Product OverviewThe MR8870 Memory Recorder is a compact, handheld data acquisition system designed for technicians and engineers who require high-speed, isolated waveform capture in the field. When configured as an RMS Recorder, the MR8870 calculates up to 1000 RMS values per second, allowing short voltage or current deviations to be detected even during extended monitoring. Equipped with two isolated analog channels with BNC inputs and four logic channels, the MR8870 enables simultaneous measurement of analog waveforms and digital signals. Each analog input supports direct voltage measurement up to 400 VDC and is isolated from earth up to 300 VAC/DC in CAT II environments.Waveform recording and RMS loggingThe MR8870 records waveforms with a maximum sampling rate of 1 MS/s, 12-bit vertical resolution and a bandwidth of DC to 50 kHz. Configurable trigger functions with adjustable pre-trigger settings allow event-based recording aligned with the measurement task, for example when capturing voltage or current transients, inrush currents or relay dropouts. When configured as an RMS Recorder, the MR8870 calculates up to 1000 RMS values per second based on high resolution sampling. This enables detection of short duration voltage or current deviations during extended monitoring periods without averaging them out. RMS values can be stored at user defined intervals together with minimum and maximum values for each interval. Current measurement with external sensors The MR8870 also measures current using external current clamps or sensors with a voltage output. AC current clamps with BNC connectors can be connected directly to the MR8870's analog inputs for portable industrial measurements. Compatible HIOKI Rogowski sensors support current measurements up to 5000 A, depending on the selected sensor. For higher accuracy or DC current applications, compatible current sensors with ME15W connectors can be used in combination with an external sensor unit for sensor power supply. The measurable current range and frequency response are defined by the selected external sensor, while the overall system bandwidth of the MR8870 is DC to 50 kHz. Logic inputs and probes The MR8870 provides four logic input channels for simultaneous recording of digital signals with analog waveforms. The logic inputs can also be used as trigger source or for time correlation of switching states with measured voltage and current signals. For low-voltage digital and contact signals, the Logic probe 9320-01 supports detection up to 50 V DC, including PLC outputs and open-collector signals, with pulse detection down to 500 ns. For relay drive and mains-level signals, the isolated Logic probe MR9321-01 enables detection of AC or DC signals up to 250 V and can be used for monitoring contactors, relay coils or power line interruptions.Memory, data handling and power supply The MR8870 provides 2 MWords of internal memory per channel for event-based waveform recording at the maximum sampling rate. For extended measurements or continuous logging, data can be stored on a removable memory card. When connected to a PC via USB, the MR8870 appears as a removable drive, providing direct access to files stored on the memory card. Recorded data can be analyzed using compatible software including the Dedicated Wave Processor Program for the 8870-20, WaveViewer or the 9335 Wave Processor. The compact housing weighs approximately 600 g and is designed for handheld use in field environments. The MR8870 can be powered using the included Z1005 AC adapter, an external DC supply or an optional battery pack. Battery operation enables up to two hours of autonomous measurement. The MR8870 is manufactured in Japan.

The Hioki MR8875 Memory Recorder is a high-speed, multi-channel logger designed for long-term data recording and real-time waveform monitoring. It supports various input modules for mixed signal measurement, including voltage, temperature, strain, and CAN signals, with a sampling period as short as 2 µs. Its robust design is suitable for harsh environments, making it ideal for applications such as battery evaluation, motor testing, and power equipment analysis. Technical Details: Channels: Up to 60 channels with input modulesSampling Rate: 500 kS/sMemory Capacity: 32 MW (64 MB) Display: 8.4-inch TFT color LCD Storage: SD card, USB memory stick Dimensions: 298 mm × 224 mm × 84 mmWeight: 2.4 kg (excluding modules)

The MR8880 is a 4 channel portable data acquisition system (DAQ) with a maximum sampling rate of 1Msamples/s on all analog channels simultaneously. It has 4 analog direct input channels for voltages up to 600V and 8 logic channels.Technical Details: Complies CAT III 600V isolation for direct measure of 480V power line 4 complete isolated channels Operating temperature range of -10°C to 50°C Built to withstand mechanical shocks and vibrations PRESET function A memory capacity of 14bit × 1 M words/ch (1 word = 2 bytes)

The Hioki MR8904 is a dual-port CAN (Controller Area Network) input module designed to interface with Memory recorder. It supports high-speed, low-speed, and single-wire CAN configurations, making it versatile for automotive and industrial applications. This module enables the analysis of up to 15 analog and 16 logic channels from CAN signals, providing precise data extraction and logging with fast response times. Technical Details:Input CAN Port: 2 ports, D-sub 9-pin male connectors Standards: ISO 11898 CAN 2.0b, ISO 11898-1, -2, -3, SAE J2411Interface: High-speed, low-speed, or single-wire CAN (selectable per port) Transmit ACK: ON/OFF for CAN signal acknowledgment Terminator: ON/OFF, 120 Ω built-in resistance Baud Rate: 50 kbps to 1 Mbps (high-speed), 10 kbps to 125 kbps (low-speed), 10 kbps to 83.3 kbps (single-wire) Analyzed Output Channels: Up to 15 analog and 16 logic channelsSignal Form: 1-bit to 32-bit signals (analog and logic) Response Time: Within 200 µs of receiving CAN message Dimensions: 119.5 mm (W) × 18.8 mm (H) × 151.5 mm (D)Weight: 185 g

The Hioki MR8905 is a 2-channel input module designed for high-precision voltage and RMS measurements. It allows switching between instantaneous values and AC RMS values, making it ideal for applications in power analysis and waveform monitoring. With a high sampling rate and integrated low-pass filter, the module ensures accurate data acquisition. Technical Details: Channels: 2, switchable between instantaneous value and AC RMS valueInput terminals: Banana jacks (CAT II 1000 V AC & DC, CAT III 600 V AC & DC) Measurement range: 500 mV to 50 V/div, 7 ranges Low-pass filter: 5/50/500/5 kHz, OFF Resolution: 1/1250 of the measurement range (16-bit A/D converter) Sampling rate: 500 kS/s (simultaneous for 2 channels) Accuracy: ±0.5% f.s. (with 5 Hz filter ON) RMS accuracy: ±1.5% f.s. (30 Hz to 1 kHz), ±3% f.s. (1 kHz to 10 kHz) Input coupling: DC/AC RMS/GNDMaximum input: 1000 V DC, 700 V AC Dimensions: 119.5 mm × 18.8 mm × 151.5 mm Weight: 185 g

The Hioki MR8903 is a 4-channel input module designed for voltage and strain measurements, ideal for precision data acquisition in industrial and research environments. It supports a wide range of strain gauges and offers electronic auto-balancing, ensuring high accuracy in both dynamic and static measurements. The module features customizable low-pass filters and provides high-resolution data capture with a 16-bit A/D converter. Technical Details: Channels: 4, selectable for voltage/strain measurement Voltage Measurement Range: 50 µV to 1000 µV/div Strain Measurement Range: 20 µε to 1000 µε/div Input Connectors: Strain gauge converter, Bridge resistance: 120 Ω to 1 kΩ Max Sampling Rate: 200 kS/s Low-pass Filter: 5/10/100 Hz, 1 kHz, OFFResolution: 1/1250 of measurement range (16-bit A/D converter) Max Allowable Input: 5 V DC Dimensions: 119.5 mm (W) × 18.8 mm (H) × 151.5 mm (D)Weight: 173 g

The Hioki MR8901 is a 4-channel analog input module designed for use with Hioki Memory Recorders. It allows precise voltage measurement across a wide range of frequencies, making it ideal for capturing fast transients and DC signals. With a maximum sampling rate of 500 kS/s and an integrated 16-bit A/D converter, it ensures high-resolution data acquisition.Technical Details:Channels: 4, voltage measurement Input Connectors: Isolated BNC (input resistance 1 MΩ, input capacitance 10 pF) Sampling Rate: 500 kS/s Measurement Range: 5 mV to 10 V/divLow-pass Filter: 5/50/500 Hz, 5 kHz Resolution: 1/1250 of measurement range (16-bit A/D converter) Accuracy: ±0.5% of full scaleFrequency Characteristics: DC to 100 kHz (-3 dB) Input Coupling: DC/GND Max Allowable Input: 150 V DC Dimensions: 119.5 mm (W) × 18.8 mm (H) × 151.5 mm (D)Weight: 180 g (6.3 oz)

The Hioki MR8902 is a 15-channel analog input module that supports both voltage and temperature measurements. It's designed for use with Memory recorder, offering flexibility for mixed-signal data capture across different types of sensors. With high-resolution measurements and customizable filtering, it’s ideal for applications requiring precise, multi-channel monitoring. This module offers robust performance for both voltage and temperature measurements in demanding applications.Technical Details: Channels: 15, for voltage/temperature measurementInput Connectors: Push button terminal (voltage/thermocouple) Voltage Measurement Ranges: 500 µV to 5 V/div (9 ranges) Temperature Measurement: Thermocouple types K, J, E, T, N, R, S, B, WRe5-26 Resolution: 1/1000 of measurement range (16-bit A/D converter) Digital Filter: 50 Hz, 60 Hz, or OFF Data Refresh Rate: 10 ms to 2 s (depending on filter settings) Max Allowable Input: 100 V DC Dimensions: 119.5 mm (W) × 18.8 mm (H) × 184.8 mm (D) Weight: 190 g

HIOKI MR6000 32-channel modular memory recorder with 200 MS/s sampling, 1000 V isolated inputs and intuitive touchscreen for high-speed multi-channel waveform capture and analysis. Order now from HIOKI Europe.

High-precision power analyzer for advanced efficiency testing and accurate power measurement in motors, inverters and power electronics. HIOKI PW8001 available now.

Precision DC Voltmeter, DC V only, measure DC Voltage and temperature simultaneously, 7-1/2 digit resolution, 1-year 20ppm accuracy, built-in EXT I/O, LAN, USB and RS-232C interface

The Differential Probe P9000-01 is designed to offer superior flexibility for waveform monitoring in high-voltage environments. Ideal for use with Hioki Memory Reorders and Dataloggers, it allows accurate and reliable measurement in various industrial applications, such as electric vehicles, solar power systems, and commercial power circuits. Compact and lightweight, this probe offers 1000 V AC/DC measurements with a choice between 1000:1 and 100:1 division ratios. With a robust operating temperature range, it ensures performance even in challenging conditions. Technical Specifications: Measurement Functions: Waveform monitor output only Frequency Characteristics (Wave Mode): DC to 100 kHz, -3 dB Division Ratio: 1000:1 or 100:1 (user selectable) DC Amplitude Accuracy: ±0.5% f.s. Input Resistance and Capacity: 10.5 MΩ, 5 pF or less (at 100 kHz) Maximum Allowable Input: 1000 V AC/DCMax. Rated Voltage to Earth: 1000 V AC/DC (CAT III) Operating Temperature Range: -40°C to 80°CPower Supply Options: o AC Adapter (Z1008), USB, External DC (2.7V to 15V DC)Dimensions: 128 mm (W) × 36 mm (H) × 22 mm (D) Mass: 170 g Cord Length: Input 70 cm; Output 1.5 m

The Differential Probe P9000-02 combines waveform monitoring with AC RMS value output, offering increased versatility for high-voltage applications. With the capability to monitor waveforms and RMS values, it is suitable for industrial applications such as electric vehicle battery circuits, solar power systems, and commercial high-voltage circuits. The probe is lightweight, compact, and offers high accuracy across a wide range of operating temperatures, ensuring durability and performance in demanding conditions. Technical Specifications: Measurement Functions: Waveform monitor output and AC RMS value output (switchable) Frequency Characteristics (Wave Mode): DC to 100 kHz, -3 dB Frequency Characteristics (RMS Mode): 30 Hz to 10 kHz RMS Amplitude Accuracy: ±1% f.s. (30 Hz to 1 kHz); ±3% f.s. (1 kHz to 10 kHz) Response Time (RMS Mode): 300 ms (rising), 500 ms (falling) Division Ratio: 1000:1 or 100:1 (user selectable) DC Amplitude Accuracy: ±0.5% f.s. Input Resistance and Capacity: 10.5 MΩ, 5 pF or less (at 100 kHz) Maximum Allowable Input: 1000 V AC/DC Max. Rated Voltage to Earth: 1000 V AC/DC (CAT III) Operating Temperature Range: -40°C to 80°C Power Supply Options: o AC Adapter (Z1008), USB, External DC (2.7V to 15V DC) Dimensions: 128 mm (W) × 36 mm (H) × 22 mm (D) Mass: 170 g Cord Length: Input 70 cm; Output 1.5 m