Have a Sierra Electric low voltage lighting system installed in your older home from the 1950's and 1960's? Find replacement Sierra low voltage light switches, remote control relays, and wall switch plates that are compatible with your wiring. (Note: Sierra Electric of Gardena, CA went out of business decades ago.) Our Despard line of switches and wallplates are fully compatible with your system. GE remote control relays may be used to replace any broken or missing solenoids in your system, if your switches have 3 wires coming out of the back.