Latch device
Latch relay drive circuit
Laundry machine control system
Lead-lag load lockout control
LED light apparatus
Lid opener mechanism
Light barrier arrangement
Light intensity controller using a proximity sensor
Light responsive control device
Lighting control interface apparatus
Load driving apparatus and driving method of load circuit
Load monitoring system with high and low load control
Lock and related key of electronic type
Locking device
Locking device for utility locks with a key signal transmitter a
Logic circuit for part detector
Low interference controlled switching circuit for multiple loads
Low power solenoid control system and method
Low pressure metering fluid pump
Low voltage transformer relay