שימו לב שער התחלתי 4 relay module amazon מורה בבית הספר להשתגע ערפילי
Multifunction Time Relay, Time Delay Relay Delay Relay Board DC 12V 8CH LED Multifunction Digital Delay Time Cycle Timing Relay Switch Module: Amazon.com: Industrial & Scientific
Amazon.com: 2PCS 4 Channel 12V Relay Module with Optocoupler High or Low Level Trigger Expansion Board for Raspberry Pi Arduino STM32 Red : Industrial & Scientific
Relay Board, Keenso Relay Module 4 Channel with Optocoupler Low Level Trigger Expansion Board for 5V/12V/24V(5V): Amazon.com: Industrial & Scientific
Amazon.com: KEYESTUDIO 4 Channel Relay Shield 5V for Arduino Controller R3 ARM PIC AVR STM32 Raspberry Pi HIGH Level Trigger Relay Module Expansion Board : Electronics
Amazon.com: ALMOCN 3Pcs DC 5V 4 Channel Relay Module with Optocoupler Support High/Low Level Trigger Relay Red Board4 channel 5V) : Industrial & Scientific
Amazon.com: DZS Elec 5V 2 Channel Relay Optocoupler Isolation Module Red Board 3-5V High and 0-1.5V Low Level Triggered Load AC 0-250V / DC 0-30V 10A SCM IO Control : Industrial & Scientific
3.3V 4 Channel Relay Module High and Low Level Trigger Dual Optocoupler Isolation 3.3V Relay Module: Amazon.com: Industrial & Scientific
Amazon.com: Electronics-Salon 4 DPDT Signal Relay Module Board, DC 12V Version, for Arduino Raspberry-Pi 8051 PIC. : Electronics
Amazon.com: KNACRO SLA-05VDC-SL-C 4 Channel Relay Module DC 5V with optocoupler Isolation Support High Level Low Level Load 10A AC 250V DC 30V (DC 5V 10A, 4-Channel) : Electronics
Relay Module YYG-4 High Power 4 Channel Relay Module Relay Shield Module Control Board Optocoupler Isolation 30A(DC 5V): Amazon.com: Tools & Home Improvement
5V 4 Channel Relay Module 4-Channel Relay Control Board with Optocoupler Relay Output 4 Way Relay Module for Arduino: Amazon.com: Industrial & Scientific
Amazon.com: 2PCS 4 Channel 12V Relay Module with Optocoupler High or Low Level Trigger Expansion Board for Raspberry Pi Arduino STM32 Red : Industrial & Scientific
Amazon.com: SunFounder 5V 8 Channel Relay Shield Module for Arduino R3 2560 1280 ARM PIC AVR STM32 Raspberry Pi 3, 2 Model B & B+ : Electronics
DC 12V 4 Channel Relay Module Optocoupler for Arduino ARM AVR DSP PIC MSP AC 250V 10A DC 30V Low Level Signal MCU PLC Control: Amazon.com: Industrial & Scientific
Amazon.com: YWBL-WH 30A 4 Channel Relay Module Expansion Board with Optocoupler for Arduino Raspberry Pi DSP AVR PIC ARM (5VDC) : Electronics
Optocoupler Relay Module, Humanized Interface Design 4 Channel Relay Module, for Ac 250V/10A, Dc 30V/10A 5Ma Trigger Current 5V, 12V, 24V 73 * 50 * 18.5Mm (5V): Amazon.com: Industrial & Scientific
Amazon.com: Oiyagai 4 Channel Relay Module DC 5V with Optocoupler H/L Level Triger for Arduino : Electronics
Amazon.com: Relay Module 4 Ways 5V/10A/250VAC 10A/30VDC Relays Support USB Power Supply LED Indicator Transition Protection 8 Bit Microcontroller Chip Relay Switch : Industrial & Scientific