Feature: 1. OSCILLOSCOPE MODE: Waveform refresh rate up to 10000wfms/s, 2 channel input, bandwidth up to 40MHZ, better signal reception. The real time sampling rate is 250MSa/s, and the recording length can reach 8k points 2. METER MODE: 4 1/2 bits of true RMS. Mini handheld digital oscilloscope has voltage, current, resistance, capacitance, diode, on off test; Automatic range function, easy to test and debug 3. CURRENT AND MULTI FUNCTION: The maximum input voltage is AC 750V, DC 1000V; Independent multimeter and oscilloscope input, support read wait function, and relative measurement function 4. TECHNICAL PARAMETERS: The digital oscilloscope signal source use a 25MHz output frequency, a 125MS/s sampling rate, a 14 bit vertical resolution, and support 1MΩ and 50Ω outputs 5. PORTABLE OSCILLOSCOPE: USB Type C interface not only supports mobile power, but also support adapter charging and top computer connection. The computer can read saved images or CSV waveforms, which is useful for later viewing and analyzing waveforms or sharing waveform data Specification: Item Type: Handheld Digital Oscilloscope Model: HDS242S Band Width: 40MHz Channel: Dual channel and single channel signal source Real Time Sampling Rate: 250MSa/s (single channel), 125MSa/s (dual channel) Sampling Mode: Normal, peak sampling Storage Depth: 8K Display: 3.5in LCD Waveform Refresh Rate: 10000 wfrms/s Input Coupling: DC, AC, ground Input Impedance: 1MΩ±2%, parallel with 16pF±10pF Probe Attenuation Coefficient: 1X,10X,100X,1000X Maximum Input Voltage: 400V(DC and AC peak, 1MΩ input impedance)(10: 1 probe attenuation) Bandwidth Limit: 20MHz Timebase Range: 5ns/div~500s/div, which is in decimal 1 to 2 to 5 Vertical Sensitivity: 10mV/div~10V/div Vertical Resolution: 8bit Low Frequency Response (-3db): ≤10Hz at BNC Rise Time (typical on BNC): ≤5ns Trigger Type: Edge trigger Trigger Mode: Automatic, normal, single Trigger Level: ±4 Fractions from the center of the display Automatic Measurement: Frequency, period, amplitude, maximum, minimum, average, peak to peak Cursor Measurement: Voltage difference (△V), time difference (△T) between cursors Communication Interface: USB TYPE C Power Source: 2 x 18650 Polymer 4400mAh Some Performance Parameters of Multimeter: Digital Display: 4½ (maximum display 20000) Measurement: Voltage, current, resistance, capacitance, diode, on off Input Impedance: 10MΩ Diode: 0-2V Function name Range Accuracy DC voltage 200.00mV ±(0.5%+5 dig) 2.0000V/20.000V/200.00V ±(0.3%+3 dig) 1000.0V ±(0.5%+2 dig) AC voltage 200.00mV/2.0000V/20.000V/200.00V ±(0.8%+5dig) 750.00V ±(1%+5dig) DC current 20.000mA/200.00mA ±(1%+5dig) 10.000A ±(2.5%+2dig) AC current 20.000mA/200.00mA ±(1%+5dig) 10.000A ±(2.8%+5dig) Resistance(Ω) 200.00Ω/2.0000kΩ/20.000kΩ/200.00kΩ/2.0000MΩ ±(0.8%+3dig) 20.000MΩ ±(1%+3dig) 100.00MΩ ±(3%+3dig) Capacitance(F) 20.000nF/200.00nF/2.0000μF/20.000μF/200.00μF/2.0000mF ±(3.0%+10dig) Frequency Response (Hz): (40-1000)Hz Signal Source Part Performance Parameters: Waveform Output Frequency: Sine Wave: 0.1Hz~25MHz Square Wave: 0.1Hz~5MHz Sawtooth Wave: 0.1Hz~1MHz Arbitrary Wave: 0.1Hz~5MHz Sampling Rate: 125MS/s Number of Channels: 1 Output Amplitude: 20MVP-5VPP (high resistance), 10MVP-2.5VPP (50Ω) Waveform Length: 8K Vertical Resolution: 14bits Output Impedance: 50Ω. Package List: 1 x Handheld Oscilloscope2 x BNC to Crocodile Clip1 x USB Type C Data Cable2 x Test Pen1 x Probe Pen1 x Bag1 x Calibration Pen4 x Plastic Ring1 x Plastic Head1 x Return Shape Iron Needle1 x User Manual