Power for lav mic plugged into a Zoom H5?
You will need an electret power supply that accepts phantom power and then will hook it up via a standard XLR cable to the H5.  If you have the bare wire version, you will also need a connector to put on the bare wire so that it can tie in to the electret power supply.  You will also need to make sure that +48v phantom power is turned on on the H5.  (Alternately you could use a battery powered electret power supply, but I'd recommend sticking to using phantom since it is available.)