Features 1、Safer Connection: Anti reverse power connection function to prevent module damage due to incorrect connection, largely improving overall safety. 2、Reliable Working: Using a high voltage power module, and the system is more stable and reliable, also has auto power saving function for energy. 3、Preset Functions: Comes with 18 kinds of preset functions, the 1 channel time delay relay will satisfy your various working needs, very useful. 4、High in Accuracy: Supports 0.01s timing function, the time relay switch with wide timing range and high accuracy ensures wide range application. 5、Quick to Install: Comes with a compact size and a light weight as well, the timer relay module is very convenient to install within minutes. Specification Item Type: Time Delay Relay Function: 18 Preset Functions Package List 1 x Time Delay Relay