Relays are used to protect a circuit from a high voltage that exceeds the value of the board’s max input/output. There are different types of relays that can either create contacts, break contacts or even a combination of the two. Some examples of relay variants are solid state relays, reed relays and control relays.

Relays

Bluetooth BLE Module 4.0 HM13 HM-13 Dual Mode BLE SPP Serial
ZAR 235.13 ZAR 204.46

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XH-M404 DC 4-40V 8A Digital Display Voltage Regulator Module XL4016E1
ZAR 124.36 ZAR 108.14

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Arduino 51 sensor kit
ZAR 1,389.55 ZAR 1,208.30

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4 channel 5v relay shield module
ZAR 0.00 ZAR 0.00

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RS422 TTL Two-way Signal Convert Module 5V (Not soldered)
ZAR 0.00 ZAR 0.00

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Arduino Sensor Kit
ZAR 0.00 ZAR 0.00

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37 in 1 Sensor Kit with box for Arduino
ZAR 507.69 ZAR 441.47

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Mini Digital Voltmeter Ammeter DC 100V 10A Dual LED Display
ZAR 57.50 ZAR 50.00

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AD7705 Dual 16 bit ADC Data Acquisition Module
ZAR 46.00 ZAR 40.00

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Arduino DUE 2012 R3, ARM 32-bit master, development board
ZAR 463.45 ZAR 403.00

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Arduino Uno Clone SMD USB MicroB-Female Connector (OPEN BOX)
ZAR 95.74 ZAR 83.25

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Arduino Uno Clone SMD USB MicroB-Female Connector
ZAR 163.30 ZAR 142.00

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