this is a simple circuit yet as it uses 220 ac volts i'm think the smart thing is to ask experts if there is anything wrong with it before plugging it in

i've a laser sensor with a relay that switches off if the beam isn't recieved
a timer relay (delay on) which i use to turn the circuit on for certain amount of time
a contactor which i use to first drive the load and second to latch the timer on for
as long as the delay as cause the laser sensor only give me pulse

please review my design and let me know if anything will go wrong

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