Feature: 1. The signal generator supports multiple adjustable modes including PWM mode, pulse mode, signal source mode, sine mode. 2. Hand- signal generator is easy to carry, easy to operate and practical. 3. Built-in 1000mAH, 3.7V rechargeable lithium battery, it can work continuously for 8 hours after the battery is fully . 4. The voltage, frequency and duty cycle are all adjustable at PWM mode, with a high accuracy of 0.1%. 5. Frequency of sine and triangular can be adjusted in a wide range. Specification: Item Type: Signal Generator Power Supply Voltage: USB 5V Product Function: PWM mode, pulse mode, signal source mode, sine mode PWM Mode: Voltage, frequency, duty cycle are adjustable, frequency accuracy of 0.1%; voltage range: 1-24v, frequency range: 1-150khz, duty cycle range: 0-100% Pulse Mode: Initial delay time t0: 0-60s, high level time t1: 0-60s, low level time t2: 0-60s, pulse number p-n: 1-99999999, resolution: 0.001 s Signal Source Mode: Voltage source 2-10V adjustable, current source 4-20mA adjustable Sine Mode: 1-999999HZ adjustable (triangular adjustable range is the same) Signal Load Capacity: Output current maximum 20mA (Note: This product is output is a signal source, can not directly drive high-power load) Environment Temperature: -10 ~ +70 Built-in Battery: 3.7V lithium battery, 1000mAH Material: plastic colour: black Package Contents: 1 x Signal Generator 1 x USB Charging Cable 1 x Banana to Clip 2P Red Black Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.