Astronomic time relay is a special time relay which can automatically calculate sunrise and sunset times according to recent date and time by using latitude/longitude information or city name. They control the devices and systems at the sunrise, sunset times or desired time interval without the need of any special sensor. Astronomic time relays have 32 programs and can be programmed separately for every day of the week.
DTR series astronomic time relays can be programmed easily to control the systems at desired times thanks to its LCD display, buttons and user-friendly menu. All settings on DTR device can also be set in the computer environment with DTR configuration software. In addition, these settings can be transferred quickly with IR technology to DTR -20M devices by using DTR-IR-PROG device. Besides, the settings made on DTR-20 device can be transferred to other DTR-20 devices with DTR-PROG module. DTR-20S/TS series devices with Modbus RS-485 communication offer remote monitoring and control with Entbus software.
There are additional reserves in DTR series astronomic time relays. These reserves prevent to delete the adjusted date, time and program information in case of electricity interruption.
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