TRM01 time delay relay module adopts high quality components and features stable performance and simple operation. It could be widely used in various control situations requiring delayed self-locking. The module is preset with 4 functions to meet a variety of applications, and can customize and add other specific functions according to user needs. With anti-reverse power function to prevent damage to the module. There are three working voltage versions of 5V/12V/24V for users to choose from. The delay can be arbitrarily set between 0.1 seconds and 120 seconds. With delay on, delay off, self-locking and trigger delay function. The settings can be saved and the contents of the settings are not lost when settingoff.