LEGRAND
Legrand - AlphaRex Time Switches
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The AlphaRex 3 is the latest addition to the Legrand digital time switch range. Available in astromical light control and single or dual standard versions, each with PC programmable functionality.
Features
- Automatic calculation of sunset and sunrise. Astro Version
- Additional switching times can be programmed.
- Offset adjustment of on/off times up to +/- 120 mins.
- Manual override facility.
- Switching accuracy: +/- 0.1 seconds per day.
- Zero Crossing Switching.
- 1 and 2 channel versions available.
- Programmable via a data key.
Benefits
- No need to install a light sensor.
- Energy savings can be gained by interrupting the cycle.
- Flexibility and adaptability to the local environment.
- Flexibility – can switch lighting on without affecting the regular programme. E.g.: security personnel.
- Most accurate time clock on the market.
- Reduces stress on the relay. Increases longevity of lamp and device.
- Can control heating & lighting/any mix of 2 loads. Or use to swap channels for equal wear on both channels.
- Multiple devices can be programmed by one key. Remote programming.
Programming
The AlphaRex 3 can be programmed for standard applications using the push buttons on the device. More expert programming can be achieved either on site or remotely using a PC, data key and Legrands patented programming software. (Pictured below)
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- 0.1 second clock precision
- Preset time and date
- Programmed via PC and programming key
- Expanded cycle functions
- Astronomical Versions
Selected variant
Technical data
Product description
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The AlphaRex 3 is the latest addition to the Legrand digital time switch range. Available in astromical light control and single or dual standard versions, each with PC programmable functionality.
Features
- Automatic calculation of sunset and sunrise. Astro Version
- Additional switching times can be programmed.
- Offset adjustment of on/off times up to +/- 120 mins.
- Manual override facility.
- Switching accuracy: +/- 0.1 seconds per day.
- Zero Crossing Switching.
- 1 and 2 channel versions available.
- Programmable via a data key.
Benefits
- No need to install a light sensor.
- Energy savings can be gained by interrupting the cycle.
- Flexibility and adaptability to the local environment.
- Flexibility – can switch lighting on without affecting the regular programme. E.g.: security personnel.
- Most accurate time clock on the market.
- Reduces stress on the relay. Increases longevity of lamp and device.
- Can control heating & lighting/any mix of 2 loads. Or use to swap channels for equal wear on both channels.
- Multiple devices can be programmed by one key. Remote programming.
Programming
The AlphaRex 3 can be programmed for standard applications using the push buttons on the device. More expert programming can be achieved either on site or remotely using a PC, data key and Legrands patented programming software. (Pictured below)
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Ordering information
Part number | Range | Supply Voltage | No of Outputs |
 |  |  |  |
412631 | AlphaRex3 D21 | 230Vac | Single Channel |
412641 | AlphaRex3 D22 | 230Vac | Dual Channel |
412654 | AstroRex D21 | 230Vac | Single Channel |
412657 | AstroRex D22 | 230Vac | Dual Channel |
412872 | AlphaRex3 Universal Data Key | Â | Â |
412873 | AlphaRex3 USB Adapter | Â | Â |
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