Features 1、The signal generator supports multiple adjustable modes including PWM mode, pulse mode, signal source mode, sine wave mode. 2、Hand-held signal generator is easy to carry, easy to operate and practical. 3、Built-in 1000mAH, 3.7V rechargeable polymer lithium battery, it can work continuously for 8 hours after the battery is fully charged. 4、The voltage, frequency and duty cycle are all adjustable at PWM mode, with a high accuracy of 0.1%. 5、Frequency of sine wave and triangular wave can be adjusted in a wide range. Specification Item Type: Signal Generator Product Function: PWM mode, pulse mode, signal source mode, sine wave mode 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 Sine Wave Mode: 1-999999HZ adjustable (triangular wave 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℃ Size(LxWxH): 92 x 70 x 28mm / 3.6 x 2.8 x 1.1in Built-in Battery: 3.7V polymer lithium battery, 1000mAH Package List 1 x Signal Generator 1 x USB Charging Cable 1 x Banana to Crocodile Clip 2P Red Black Cable