Legrand AlphaRex³ DY21 GPS/DCF, digital year-round timer with additional astro function, 1 channel, 84 switching programs, operating voltage 230 V 50/60 Hz, time synchronization via external DCF77 antenna (412706) or via GPS antenna time and location coordinates (412707). Program creation directly on the device or with PC, AlphaSoft, PC adapter (412873) and data key (412872). Astro function (sunsets/sunrises) can be combined with timer function. Permanent ON/OFF, random program, cycle function, 1 hour test, PIN code lock, operating hour counter, backlight, automatic summer/winter time change, 5 year power reserve, accuracy +/- 0, 1 sec/day or synchronous with GPS/DCF signal, shortest switching time: 1 sec., zero-crossing switching. Switching output: 1 normally open contact.
| Property | Value |
| Width in division units: | 1 |
| Number of channels: | 1 |
| Protection class (IP): | IP20 |
| Supply voltage: | 230 V |
| Power reserve in years: | 5 |
| Weekly program: | yes |
| Annual program: | yes |
| Mounting type: | DIN rail |
| Type of supply voltage: | AC |
| Frequency of supply voltage: | 50 to 60 Hz |
| Accuracy per day: | 0.1 s |
| Text guidance in the display: | yes |
| 24 h program: | yes |
| 60 min program: | no |
| Automatic summer/winter time change: | yes |
| Shortest switching time channel 1: | 1 min |
| Holiday program: | yes |
| Pulse program: | no |
| Cycle program: | yes |
| Astro program: | yes |
| External button input: | yes |
| Random program: | yes |
| Operating hours counter: | yes |
| Mains synchronous: | yes |
| Quartz controlled: | yes |
| Radio controlled: | no |
| Manual operation: | yes |
| Number of memory locations: | 84 |
| Switching preselection: | yes |
| Nominal switching current at 250 V AC: | 16 A |
| Potential-free switching contact: | yes |
| Width: | 35.6 mm |
| Height: | 83 mm |
| Depth: | 60 mm |
| External programming: | yes |
| Radio controlled (DCF77): | yes |
| GPS: | yes |
| With memory card: | no |
