NTE Electronics RS3-1D10-51 Series R3 Solid State AC and DC Power Relay, SPST-NO Contact Arrangement, Back to Back Dual SCRs, 3-32 VAC Input, 24-240 VAC Output, 10 Amp: Amazon.com: Industrial & Scientific
PLC Controller 32 Channels Switch Control Relay Mini Size RS485 R421C32 Serial Port Switch DC 12V for Electronics: Amazon.com: Industrial & Scientific
2PCS DC 3V-15V 5V 12V Voice Control Delay Switch Miniature Microphone Sound Activated Time Delay Turn Off Module Voice Alarm Sensor Module for LED Relay Electronic Device: Amazon.com: Tools & Home Improvement