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CR Magnetics CR5395-EH-24D-330-X-CD-NPN-I DC Current Sensing Relay with Optoisolated NPN Transistor and Internal Transformer, 24 VDC, Energized on High Trip, 3.0-30 ADC Trip Range: Electronic Relays: Amazon.com: Industrial & Scientific
Electronics-Salon 2 SPDT 10Amp Power Relay Module, DC 5V Version.: Amazon.com: Industrial & Scientific
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CR Magnetics CR7310-LH-24D-.011-X-CD-NPN-R Ground Fault Sensor Relay with Optoisolated NPN Transistor and Remote Transformer, 24 VDC, Latch on High Trip, 0.01 to 0.1 AAC Trip Range: Electronic Relays: Amazon.com: Industrial & Scientific
Amazon.com: NESHO Transistor Type Time Relay JS14A 24V 36V 110V 220V (Size : 0-30 Seconds AC220V) : Industrial & Scientific
NOYITO 30A 1 Channel Relay Module High Low Level Trigger with Optocoupler Isolation Load DC 30V AC 250V 30A for PLC Automation Equipment Control Industrial Control (1 Channel 12V): Amazon.com: Industrial &
Electronics-Salon DIN Rail Mount 2 SPDT 10Amp Power Relay Interface Module, DC 12V Version.: Amazon.com: Industrial & Scientific
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1-way controllable silicone solid relay switch module optical coupling separation MOS transistor output: Amazon.com: Tools & Home Improvement
Amazon.com: [2-Pack] DC 5V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific