MEMO-AST2  Digital Astronomical Time Switch

Astronomical twilight switch for the management of electric loads from sunset to sunrise according to the set geographical coordinates.
The device has two output relays: a relay (not changeable) for the switching on at sunset and switching off at sunrise and the other relay (changeable) for the selection of 6 different programs.
The device is particularly suitable for the management of shop lighting and sign lighting in general.
The keypad lock function by password prevents unauthorised people from doing setting modifications: this is useful for installations in public places.
It is possible to replace the backup battery when it is depleted.
The IR interface also allows the setting exchange between the device and the remote control memo.RC.



•  Relay switching only with power supply

•  2 channels

•  Maximum holiday events for each channel: 4 periods + 20 days

•  Programs available:

– 6 programs (P1P2,P3,P4,P5 and P6) on output 1

– P1  fixed and not modifiable on output 2

•  Summertime automatic update

•  Manual override of the relay (temporary or permanent)

•  Battery life: 3 years (replaceable by opening the rear cover)

•  Depleted battery signalling

•  Integrated infrared interface

•  Keyboard can be locked with the use of a password

•  Display automaticaly shuts-o after 3 minutes of inactivity of the keyboard

•  Din mounting



Technical Data:

•  Power Supply: 230V AC(-15% – +10%)

•  Number of relays: Two (in monostable change-over)

•  Output: 16(10)A /250Vac

–  Fluorescent lamps @ 240V 600W

–  Incandescent lamps @ 240V 1500W

–  Halogen lamps @ 240V 1500W

•  Dimensions: 2 Din module (35mm)

•  Frequency: 50/60Hz

•  Absorption: 8VA (2)W

•  Battery back-up: Yes (Approx 3 years lithium CR-2032)

•  Switching in case of power failure: No

•  Minimum Switching: 30 minutes

•  Temperature Range: 0°C to +50°C

•  IP Rating: IP20

Order Number: VE343000