Note:
After receiving the For Knowles unit, The buyer Must Use the thread head Contact the unit contact point test no problem and then install.
For Knowles Moving iron unit ED-23814 .ED-29689 same series moving iron horn .
Size: 6.32mm*4.31mm*2.97mm
Impedance: 24 Ohm
Package included:
2pcs New For Knowles ED-23814 high frequency