Description: 100% brand new and high quality Feature: In actual work, this module will be used when the need for isolation control and voltage conversion is encountered. It can realize the interface of 3.3V or 5V to control 3.6-24V voltage level. After the control terminal is turned on, the controlled terminal will also be turned on. The photoelectric isolation has strong anti-interference ability. Behind can drive high-power transistors, MOS tubes and other occasions that require high-voltage driving, and can also directly drive low-power 24V relays to work. If it is a pulse signal, please note that the limit of 817 is below 4KHZ. For control signals greater than 4KHZ, please do not use this module, it will work abnormally. The jumper cap can be used to realize whether the output terminal is a high potential output or a low output. The 2/4 way 817 on the board are independent, which can realize the simultaneous control of different voltages, etc. Specifications: Item Type: Isolation Board Material: electronic components Size: 2 Way: 38x29mm/1.4x1.1in, 4 Way: 37x46mm/1.4x1.8in Color: Green Optional Type: 2 Way, 4 Way Drive terminal signal voltage: 3.6-24V Output voltage range: 3.6-30V (the output current depends on the specific situation, but the maximum is not 10MA, the total power is a certain voltage and current are inversely proportional) Quantity: 1 PC Note: Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Includes: 1 x Isolation Board (other accessories demo in the picture are not included )