Selec ATS2M1-1-16A 1 Channel Astronomical Time Switch
Selec ATS2M1-1-16A Astronomical Time Switch (DIN Rail, 16A, 230V AC)
Astronomical DIN-rail time switch with accurate sunrise/sunset calculations, 16A relay output, weekly scheduling, DST offset, and 10-year battery backup for panel automation.
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The Selec ATS2M1-1-16A Astronomical Time Switch is a DIN-rail-mounted digital timer designed for automatic relay switching based on calculated sunrise and sunset times. It is ideal for industrial, commercial, and outdoor lighting automation applications requiring accurate timing without external sensors.
Key Features
Astronomical ON/OFF control using precise latitude/longitude settings
16A SPDT relay output suitable for lighting loads and industrial circuits
LCD text display with time, step number, relay status, day of week
Weekly programming with auto/manual override modes
Adjustable DST offset, weekly OFF, and twilight modes
12/24-hour format with 1-second minimum setting
10-year lithium battery power reserve
DIN-rail 35 mm mounting for quick installation
High EMC immunity and CE compliance (EMI/EMC standards on page 2)
Technical Specifications
| Specification | Details |
|---|---|
| Model | ATS2M1-1-16A |
| Mounting | DIN Rail 35 mm |
| Display | Text LCD (no backlight) |
| Character Height | 5.07 mm (HH:MM), 3.39 mm (SS) |
| Output Relay | 1 C/O (SPDT) |
| Contact Rating | 16A at 250V AC |
| Operation Period | 1 week |
| Program Type | Relay ON at sunset, OFF at sunrise (calculated) |
| Minimum Setting | 1 second |
| Clock Mode | 12/24 hours |
| RTC Accuracy | ±15 mins/year @ 25°C |
| Supply Voltage | 230 V AC ±10% (50/60 Hz) |
| Power Consumption | Approx. 9W at 252V AC |
| Operating Temperature | 0°C to 50°C |
| Storage Temperature | -20°C to 70°C |
| Humidity | Up to 95% RH (non-condensing) |
| Weight | 105 g |
| Battery Reserve | 10 years (lithium) |
| EMC Compliance | IEC 61000-4-2/4/3/6/8/11, CISPR-11/22, IEC 61326-1, IEC 61010-1 |
Applications
Streetlight automation
Solar and outdoor lighting systems
Industrial control panels
Commercial building lighting
Signage and façade lighting
Energy-saving automated systems
What’s in the Box?
Selec ATS2M1-1-16A Astronomical Time Switch
User manual
Warranty card
FAQ
1. Does this timer need an external sensor?
No. It calculates sunrise/sunset automatically using latitude/longitude settings.
2. Can it be used for industrial lighting loads?
Yes, it supports a 16A @ 250V AC relay output.
3. Is the time memory retained during power loss?
Yes, it has a 10-year lithium battery reserve.
4. Can it operate in outdoor panels?
Yes, if housed inside a weather-protected enclosure.
5. Does it support twilight mode?
Yes, twilight rise/set trigger modes are included.