Feature: 1. Integrates Multiple Functions: digital storage oscilloscope, arbitrary function signal generator, high accuracy multimeter, data recorder, frequency meter, FFT spectrum analyzer. 2. 4-channel Digital Storage Oscilloscope: 1GSa/s high sampling rate, 8M large storage depth, 25MHz signal source; Edge, slope, pulse width, video, timeout and other triggers; Up to 42 measurement functions. 3. Function of Arbitrary Function Signal Generator: the highest output frequency reaches 25MHz, 12bit high resolution, 200Ms/s high sampling rate; Built in a variety of arbitrary waves, support AM/FM modulation, output high resistance and low resistance can be switched. 4. Digital Multimeter Function: AC and DC voltage, current, resistance, capacitance, diode, on off measurement. The multimeter has its own data recording function, which can monitor and record the changes of voltage, current, resistance and other data for a long time and generate a trend chart. 5. Suspension Foot: Unique suspension foot design, it can be used and put at any time. It is anti falling and anti-seismic, sturdy and High quality. 6. High Power and Long Endurance: built in high capacity detachable lithium battery, full power, which has long endurance and standby time. 7. Support Multiple Fast Charging Protocols: standard 18W charger for fast charging; The type-C interface is compatible with mobile phones and can share a set of charging equipment. 8. 7in TFT LCD Large Screen: super large touch screen, resolution up to 800*480, friendly and easy-to-use UI, good interaction experience. Specification: Model: TO1154D / TO1204D / TO1254D (Optional) TO1154D: 150MHz bandwidth TO1204D: 200MHz bandwidth TO1254D: 250MHz bandwidth OSCILLOSCOPE: Channel: 4 Analog channels Sampling Rate: 1GSa/S Storage Depth: 8Mpts Signal Source: 25MHz ARBITRARY WAVEFORM GENERATOR: Channel Number: 1 Sampling Rate: 200MSa/s Vertical Resolution: 12bit The Highest Frequency: 25MHz Standard Waveform: Sine wave, Square wave, Triangle wave, Noise, DC Amplitude: 50Ω+2% Wavelength: 4KSa MULTIMETER: Maximum Resolution: 4000 points Measuring Method: Voltage, Current, resistance, capacitance, diode, on-off measurement Maximum Input Voltage: AC: 600V; DC: 600V Maximum Input Current: AC: 10A; DC: 10A Input Impedance: 10MΩ DC Voltage: 400mV/4V/40V/400V/600V AC Voltage: 4V/40V/400V/600V DC Current: 40mA/200mA/4A/10A AC Current: 40mA/400mA/4A/10A Resistance: 400Ω/4KΩ/60KΩ/400KΩ/4MΩ/40MΩ Capacitance: 40nF/400nF/4μF/40μF/100μF Diode: 0~1V On off Measurement: