From the manufacturer:

The Tekpower TP3710A DC electronic load is a compact and affordable instrument that is suitable for both home and industrial use. This programmable DC Electronic Load has a maximum power of up to 150 Watts and can be used with power supplies up to 360 Volts DC and 30 Amps. It comes with both a rotary switch and a numeric keypad which may be used to set up the voltage, current and power. With its reliability and versatility, it's an invaluable and indispensable tool for testing DC power supplies, high-capacity batteries, solar panels and etc, ideal for labs, research institutes, R& D facilities. The TP3710A Programmable DC load also features internal memory, and can be connected to a PC via a USB port with the included software to implement real-time remote control and monitoring.

Main Specifications:

Input voltage: 0 - 360 V
Input current: 0 – 30 A
Input power: 0 – 150 W
Voltage accuracy:
0.000~3.999V：0.2% + 3mV
4.00~35.99V：0.2% + 30mV
36.0~360.0V：0.2% + 300mV
Current accuracy:
0.000~2.999A：0.2% + 3mA
3.00~30.00A：0.2% + 30mA
Minimum resolution: Voltage 1mV, Current 1mA
Lowest Conductive Resistance: Ripple: Dimensions: 8 ½ X 3 ½ X 9 ¾ inches
Weight: 10 lbs

　 What's in the box:

Tekpower TP3710A Electronics Load
AC power cord
Software CD
USB adapter with cable
Handle bars
Mounting rack
User manual
Certificate of calibration