With 8 channels of input and output control, each channel can be set to 20 kinds of functions to meet more application requirements. DC 8v-36v wide voltage input, with the function of power anti-reverse connection, will not damage the module due to wrong power connection. With power indicator light and relay suction indicator light. At least 1 second timing function can be set, accurate timing, error less than 1%. Add automatic power saving function. All setting options can be automatically saved, the content of set won't lost when power off. Trigger signal input supports user selection, high level or low level pulse triggering. 8-channel multi-function relay control module, using industrial-grade high-quality components, carefully designed and processed, stable performance, simple operation, can be widely used in various power control applications. The module presets up to 20 kinds of functions, uses 8-36V wide voltage power supply design, and adds the linkage function of each channel, users can freely combine many new applications, such as sequential linkage, cycle linkage and so on. Colour:As Shown Material:PCB Package Contents: 1 x 8-channel Multifunction Time Delay Relay Interface Board Module 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.