Build your own? Would cost you about $10 a bulb, and $4.50 per relay, but it’s a little difficult to find relays that handle more than 12A at 220V, so you might consider staging it so the 110v relay closed by the LED driver would then supply 110v to a magnetic contactor. If you need it to turn off fast, then you would need to spend a bit more, but even including a project box to put each of them in, you could probably still build 3 of them for around $80
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