The relay in ipLDK-60 is an open/close contact. So there there is onluy the ON/OFF switch function.
Your door strike must be power supplied from the mains. If it is 110 VAC or 230 VAC to switch the door strike on and off, I would use an other external relay, so you only send low voltage through the ipLDK-60.
The ipLDK makes the on/off function and the external relay switches the high voltage to the door strike.
///doktor