Simple Timer in rule

Good Evening,

Could anybody shed some light on a simple timer rule for me please?
trying to add a 2 minute timer in between the item state change and the next command.

heres my rule so far.

`rule "Turn all radiators off"
 Item Boiler_Status changed from ON to OFF  
 sendCommand(gALLRADIATORS, OFF)

any response is much appreciated.

It’s outlined here