ENTES DTR-20M Astronomical Time Relay is capable of estimating sunrise and sunset time. The users city or geographical coordinates can be programmed on the timer to provide accurate time. This unit runs on 2 relay outputs and operates at a voltage of 230 V with a decade of battery life. The DTR-20M has 32 program slots ve 7/24 relay programming accurate in seconds. It is characterized by it holiday mode, backlight, and password protection features and users can utilize the infrared remote to sync the PC and transfer programs. Furthermore, this device also uses the memory module to deliver finished programs of a device to other unprogrammed device.