I used a Peltec 102 relay timer,bought it from here,
http://www.peltectimers.com/site/timers.php But I don't know what your electricity voltages are over the sea. As far as motors for the trays, I looked on
ebay,Do a search for electric gear motors,first that operates on your voltage,and then look at the final rpm.The slower the better,as you can always do as I did and connect the pulley off the motor to another shaft with a larger pulley,thus cutting down the speed more and giving more torque.
The little motor I bought only has about 1/5 horsepower,and the final shaft speed is only 6rpm,,it came with a 2" metal gear attached to the motor,,I took this gear off the shaft,bought a v-belt pulley about 2" in diameter,,then attached this to the motor,,then I bought a 7" v belt pulley,and about a 26" v-belt,,made a block-frame set up to attach motor,and pulleys apart,then took the old 2" metal gear that came with the motor,and attached it to the same shaft of the 7"v belt pulley,and welded an 2" long bolt to it,this is where the short connecting rod is attached,that hooks up to the long flat bar that is connected to all three turning trays,so they all move at once,up and down,and stay the same distance apart. Sorry about you being so far away,,but we can get this worked out,keep the questions coming. The 7" v-belt pulley continously rotates in a circle,the same direction all the time,but the trays only go up and down,,you will have to do some measuring to learn how much "throw" it will take to move the trays the desired amount,and this will also have to be checked as far as where the flat connecting rod is attached to your egg trays,and how far away from center it is put.It will be trial and error,but in my set up,I determined once the connecting flat stock was attached to all 3 trays,the total travel up and down was 4",that is how much the flat stock bar moved,to make the trays go from the top of travel to the bottom of travel,you then cut this distance in half,,so I knew I would need to put a bolt 2" from the center of the shaft,to get the total 4' of travel,this is where the short connecting rod is hooked to,it's hooked to the bolt welded on the 2" metal gear,and the other end attaches to the long flat bar.If you look at the pictures closely,you will see this short bar,and also the relay tomer is screwed down on the plywood,right in front of the electric motor,it's the white box,with wires coming out of both ends.