According to the data sheet, the REN "Ringer Equivalence Number" of that device is 3.  Powered phones use less than 1 REN, and all phones are supposed to have their REN number written on them somewhere.  So it depends on your phones.

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I have just purchased one of these devices on eBay. Will it be able to ring all four of the dumb unpowered analog telephones in my house?