Features: * Brand new and high quality * Made of high quality materials, sturdy and * Standard modular structure, guide rail installation * Real-time monitoring of DC overvoltage and undervoltage faults * No additional auxiliary power required * Overvoltage and undervoltage values can be set * For Action time can be adjusted * 2 sets of normally open and normally closed contacts * 2 indicator lights show different working status * Typical applications: DC motors, batteries, UPS power supplies, DC switch cabinets, DC distribution panels, industrial control systems Specification: Protection function: overvoltage, undervoltage Type (optional): DVRD-12, DVRD-24, DVRD-36, DVRD-48 Rated voltage: DC12V 24V 36V 48V Monitoring circuit: DC circuit Protection function: overvoltage, undervoltage Overvoltage adjustment range: 13-17V Undervoltage adjustment range: 10-14V Action delay range: 0.1-15s Display mode: normal, action, 2 LED lights indicate working status Contact form: 2 sets of normally open and normally closed contacts Contact capacity: 6A 250VAC (resistance) Installation method: 35mm guide rail Overall dimensions: 79*23*79mm/3.1*0.9*3.1 inches Package Included: 1 x overvoltage and undervoltage protector Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2.Please allow slight manual measurement deviation for the data. Dvrd Surge/Undervoltage Protection Relay Voltage Protection Dc12V24V36V48V Made of high quality material, durable and practical to use. Perfect functions,give you a wonderful experience. Every customer can enjoy 30 days refund or replacement for Damaged/Quality Issues. If you have any questions, please feel free to contact us, we will solve it for you.