Features: Wide voltages ranges: Supports input voltages from 6V to 30V, adapts to various power supply needs, and strong flexibility. Delay function: Adjustable delay power-off function, users can set the shutdown time of the device according to their needs, for various application. Triggers mode: Supports high-level triggers mode. When the input signal is high, the relays will be activated, suitable for direct connection with digital circuits or microcontrollers. Cycle timing function: It can set the cycles timing switches period, for devices that need to be turned on or off at regular intervals, such as timed lighting, heating equipment. LED display screen: Builts in LED display screen, real-time display of relays working status, convenient for users to observe and debugs circuits. High load capacity: relays module can carry large load current for controlling various household appliances and industrial equipment. The module, making it easy to install in various space for embeddeds applications. This 6V to 30V one-way relays module multiple functions such as delayeds power-off and cycle timing, for various control needs, especially in the field of automation and smartests homes. Specifications: Material: Size: 62x38mm/2.44x1.5inch Quantity: 1PC, 3Pcs(optional) Package Includes: 1/3Pcs DC6-30V timers relays note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item. Thank you!