What stands out about this choice is how Phoenix Contact keeps things simple yet reliable, which many users appreciate.
Phoenix Contact EMD-FL-V-300 Monitoring Relay EMDFLV300 (TSC)
A nice touch is that Phoenix Contact relays often pair well with standard sockets, saving you from hunting for special parts.
You will find that Phoenix Contact relays are widely available, so getting replacements does not turn into a long wait.