Hi mmadd444,
The one you have indicated is currently out of stock and also uses a transistor as an output.
What you are looking for is one with a mosfet output.
The reason for this is just that the mosfet acts in the same way as the contact on a relay.
Using a transistor output is possible, but you then need to do measurements on the circuit of the clock to see which way round the device must be and so is just more difficult.
An example of a opto-FET that will work is the TLP175.
This device is configured so that it is polarity insensitive by which I mean that you do not need to know which pin is positive and which is negative. Depending on the clock circuit, the one side of the switch will have a positive side and the other negative.