Spa and pool pump and heater control

Square root digital-to-analog converter

Station timing selection circuit for irrigation controller

Stove timer and automatic cut off system

Structure of multiplex connector

Superconducting switching element and method

Switch assembly for a timing module

Switch assembly for maintaining an electric time switch clock sy

Switch device for connecting AC power source to load

Switch device of theft-prevented type alarm

Switch integrated controller for energizing an external...

Switch lever operating device with automatic timer

Switch time delay apparatus

Switching circuit

Switching circuit and a relay device employed to prevent arcing

Switching circuit for power supply to electronic apparatus

Switching current and a relay device employed therein

Switching equipment for numerical controlled machine tools

System and method for double fault protection within a digital c

System disconnection detection circuit for a distributed locatio