WITRN K2 Red (48V INA237) Multifunctional USB Tester Power Meter Voltmeter Ammeter PD3.1 Fast Charging Detector

Description:
- Support USB PD3.1, USB PD3.0 fast charging standard has been upgraded, PD3.1 fast charging standard supports up to 48V voltage output, and the charging power has been increased to 240W.
- Aluminum alloy CNC shell, 1.54-inch color IPS LCD screen displays larger and clearer, with a resolution of 240x240 (wide viewing angle screen).
- 240MHz ultra high speed M4F 32-bit CPU with FPU hardware acceleration unit and independent 16-bit high-precision ADC sampling chip.
- New protocol detection arrangement, one click detection of fast charging protocols supported by power supply equipment, making it clear at a glance what protocols the power supply equipment supports.
- Record the Wh capacity during device charging/discharging, and convert it to mAH using the Wh conversion function. Determine the charging and discharging efficiency of the device by the ratio of its discharge capacity to its charge capacity.
- Double ended TYPE-C data cable, E-Marker data measurement; Read chip information with E-Marker chip cables, supporting Thunderbolt 3, Thunderbolt 4, Thunderbolt 5, USB4, EPR cable detection, and supporting 50V 5A PD3.1 EPR cable detection.
- Detect 100W 5A charging head, enable virtual E-Marker function, no need to connect 5A data cable with E-marker later, more convenient protocol detection.
- Paired with professional commercial loads, it can detect the ripple frequency of output devices such as charging heads, intuitively reflecting the output stability and quality of the equipment.
- By connecting the UID port of K2 to a computer, it is possible to observe the voltage/current/power/temperature curves throughout the entire charging period, while also supporting fixed-point data queries at any time point during the period.
- More functions: Internal resistance detection of data cables, identifying the quality of data cables; Gravity automatic screen rotation function; Personalized customization of startup page.

Interface and Buttons:
- HID interface: K2 is a separate power supply interface or connected to the upper computer for updates.
- Type-C male port: 24P straight through high current and high conductivity copper USB-C terminal.
- Type-C female port: supports current input and output.

Specification:
- Measurement voltage: DC 3.3 ~ 48V (K2-237)
- Measurement voltage: DC 3.3 ~ 36V (K2-226)
- Voltage resolution: 0.0001V
- Capacity record: 0 ~ 99999Ah
- Measurement current: 6A (10A short-term peak)
- Current resolution: 0.0001A (bidirectional current detection)
- Capacity record: 0 ~ 99999Wh
- CPU: ARM M4F 240MHz high-speed 32-bit with FPU hardware acceleration unit
- Display: 1.54-inch color IPS LCD screen, resolution of 240x240 (wide-angle screen)
- Sensor: 3-axis gravity sensor
- Core ADC: 16-bit independent ADC chip (INA226:36V, INA237:48V)
- High speed sampling: 2MHz high-speed on-chip ADC
- Sampling resistor: low resistance sampling resistor (high side sampling) to prevent common ground interference
- Main interface: 24P USB-C male/female socket direct connection
- External sensor: temperature measurement NTC-20℃ ~ +120℃ (TYPE-C interface special temperature probe)
- Storage medium: EEPROM wear balance
- Firmware upgrade method: USB HID without driver (independent USB-C HID interface)
- Computer online curve: HID upper computer (USB-C HID interface without driver)
- High speed waveform sampling: 2MHz Max
- Ripple analysis: simultaneously lock and display frequency data and ripple value
- Exterior dimensions: approximately 36.4 x 35.5 x 9.55 mm (excluding USB-C male connector)

Package Included:
- 1 x USB Tester