GERI Newer Version 12V Multifunction Relay Cycle Timer Module - Programmable with Customized Settings (Increased to 18 Modes) The product is registered Trademark by GERI&reg; . High quality, 12 months worry-free product guarantee Load capacity: normally open port maximum load capacity: DC 0-30V/10A, AC 0-250V/10A NC port maximum load capacity: DC 0-28V/10A, AC 0-125V/10A. Dimensions: 4.0 * 6.6cm, screw 4, diameter 3.0mm. If you need to read the instructions before buying, please contact us, we will send you the electronic manual.