MICRO-AST  Digital Astronomical Switch

Astronomical twilight switch for the management of electric loads from sunset to sunrise according to the set geographical coordinates. In addition, the automatic programming of switching on at sunset and switching off at sunrise has the possibility to set 30-minute-night switching off. The device is particularly suitable for the management of shop lighting and sign lighting.


•  Relay switching only with power supply

•  Available programming:

– P1 xed with possibility of night-switching o of minimum 30 minutes

•  Sunrise and sunset times are calculated according to phone pre x geographical coordinates

•  Display of the sunset/sunrise times calculated by the device

•  Update of sunrise/sunset times: ± 120 minutes

•  Summertime automatic update

•  Switch on and switch of always visible

•  Each switch On/Off of loads occurs exactly at the calculated sunset/sunrise-time

•  Manual override of the relay (temporary or permanent)

•  Depleted battery signalling

•  Replaceable battery

•  Din mounting



Technical Data:

•  Power Supply: 230V AC(-15% – +10%)

•  Number of relays: One (normally open)

•  Output: 16(10)A /250Vac

–  Fluorescent lamps @ 240V 600W

–  Incandescent lamps @ 240V 1500W

–  Halogen lamps @ 240V 1500W

•  Dimensions: 1 Din module (17.5mm)

•  Frequency: 50/60Hz

•  Absorption: 5.5VA (1)W

•  Battery back-up: Yes (Approx 4 years lithium CR-1632)

•  Switching in case of power failure: No

•  Minimum Switching: 30 minutes

•  Temperature Range: -20°C to +50°C

•  IP Rating: IP20

Order Number: VE762300