Theory: Electromagnetic RelayContact Load: Low PowerProtect Feature: EpoxyPower Source: DCUsage: General PurposeMaterial:Plastic + Metalcolour:As ShownPackage Contents:5 * G5V-2-5V relay/5 * G5V-2-12V relay/5 * G5V-2-24V relayOnly the above package content, other products are not included.Note: Light shooting 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.