There is a whole line of switches made for these things. Actually, they are not strictly SPDT, but are momentary SPDT with a center off (the rest position). They have them in single, double, triple, etc gang. When my new church was built about 20 years ago, the wonderful architect designed 2 multi-purpose rooms, but didn't put in light switches. The switches, actually breakers, were far from the rooms. I can't tell you how many times, during a meeting, someone at the breaker panel, while turning off other light, would plunge our meeting into darkness. There were 2 circuits in each of the 2 rooms. I put in the GE relays and 2 switches in each of the 2 rooms. The circuit breakers were marked, "you touch, you die" .... well not actually. They were moved to the bottom of the breaker box. Anyway, I used the low voltage units because I had to snake the wires through concrete block walls, which is nearly impossible. So, the low voltage wires actually come down from the ceiling in an adjacent closet. I could have run conduit, but it would have been much more difficult. I have had 1 of the relays and 2 of the switches fail in 20 years. I think the switch failed because the relay was intermittent and people were pressing it harder and harder .... finally breaking the switch. BTW, I 1st saw this stuff in the 60s in a custom built house. Also, in the late 70s, I worked for a company that used them in all their offices for lighting.