Combined 24 hour clock and programmable timeswitch with two independently settable relay outputs. A 4-digit 12.7mm red LED display shows current time and is also used for program setting and checking. The circuit is microcontroller based for accuracy and reliability.
Two push buttons are used to set the clock time and the timeswitch operating times. Each relay output is independent and can be set (HH:MM) with up to TWO On/Off cycles every 24 hours. So you could, for example, have Relay1 turn On at 00:00 and Off at 01:45 and On again at 13:20 and Off at 14:25 and Relay2 On at 06:15, Off at 08:40, On at 20:00 and Off at 23:59.
Useful in a wide variety of control applications including hyroponics, irrigation, opening vents, access control or even periodically reversing the polarity of a DC supply voltage e.g. to a DC motor (see connection diagram).
Kit version includes solder for assembly.Specifications
|Input Voltage||Regulated 12Vdc (e.g. Order Code 660.446UK with connector 778.106 or 777.001 is suitable)|
|Current Consumption||45mA no relays active (each relay consumes approx 25mA when active)|
|Battery Backup||9V @ <10mA i.e. PP3 battery (Order Code 656.020)|
|Individual Relay Rating||230Vac @ 1A, 110Vac @ 2A, 30Vdc @ 2A maximum|
|Relay Connections||NO, NC, C (Relay FAQ)|
|Board Dimensions||1 x 38x93mm (Display), 1 x 80x93mm (control)|
|Board Connections||Solder Posts (hole spacing accepts screw terminal blocks)|
|Product Formats||SELF-ASSEMBLY Electronic Kit (KT) or|
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