Entes Astronomical Timer Relays
An astronomical timer relay is a timer relay that calculates sunrise and sunset times from the entered location and date and switches lighting on and off without a light sensor. It is used in circuits that should switch on at sunset and off at sunrise, such as street and area lighting, signs, shop windows, residential complex and parking lot lighting. The category includes the Entes DTR series and Tense models; there are single- and double-contact types, types with RS485 communication, with external memory, and with the five daily prayer times feature. Choose the model according to the number of contacts and contact current, supply voltage, number of programs, how the location is set, and communication needs. The 10 A and 16 A relay output values in the product data are for resistive loads; for luminaires with LED drivers and ballasts, verify the permitted load from the manufacturer data. An astronomical timer relay does not measure ambient light and operates according to the calculated times; in this respect, it must not be confused with a photocell relay.
Products
- Entes DTR-10T Astronomical Time Switch, Single Contact, 85-265VAC, IP41 — Entes · SKU: M5307 · TRY 1,860.60 · In stock
- Entes DTR-20TS Astronomical Time Switch, RS485 Communication and Single Contact, IP41 — Entes · SKU: M5676 · TRY 2,784.60 · Made to order
- Entes DTR-20S Astronomical Time Switch, RS485 Communication and Dual Contact, IP41 — Entes · SKU: M4921 · TRY 2,994.60 · In stock
- Entes DTR-25 Astronomical Time Switch, 5 Prayer Times and Dual Contact, IP41 — Entes · SKU: M1929 · TRY 2,818.20 · In stock
- Entes DTR-10 Astronomical Time Switch, Dual Contact, IP41 — Entes · SKU: M4912 · TRY 2,062.20 · In stock
- Entes DTR-20 Astronomical Time Switch, External Memory and Single Contact, IP41 — Entes · SKU: M4920 · TRY 2,255.40 · In stock
How to choose Astronomical Timer Relays
An astronomical timer relay is a timer relay that calculates sunrise and sunset times from the entered location and date and switches lighting on and off without a light sensor. It is used in circuits that should switch on at sunset and off at sunrise, such as street and area lighting, signs, shop windows, residential complex and parking lot lighting.
- Separate sensing, motion control, logic processing and operator interface requirements.
- Select signal type, supply voltage, communication protocol and I/O count for the machine network.
- Verify housing size, sensing distance and PNP/NPN output polarity against the PLC input card.
Frequently asked questions
What is Astronomical Timer Relays and where is it used?
An astronomical timer relay is a timer relay that calculates sunrise and sunset times from the entered location and date and switches lighting on and off without a light sensor. It is used in circuits that should switch on at sunset and off at sunrise, such as street and area lighting, signs, shop windows, residential complex and parking lot lighting.
What should I compare when choosing Astronomical Timer Relays?
Choose the model according to the number of contacts and contact current, supply voltage, number of programs, how the location is set, and communication needs.
Where can I find technical details for Astronomical Timer Relays products?
An astronomical timer relay does not measure ambient light and operates according to the calculated times; in this respect, it must not be confused with a photocell relay.
Astronomical Timer Relays Selection Guide: Technical Criteria & Application Standards