LEF Series with 8-Ohm Speaker Updated on March 30th, 2026 How to add an 8-Ohm speaker in place of a door station on the LEF Series. External Signaling with the RY-AC/A Relay on the LEF Series LEF Series Door Release Wiring LEF Series General Installation and Operation Guide LEF Series Volume Control LEF Series with 8-Ohm Speaker speaker 8-ohm