5V Dual Channel Relay Module with Optocoupler HC-SR501 PIR Sensor (Passive Infrared Sensor) + IR Proximity Sensor Adjustable detection range digital output

Adjustable detection range digital output

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Direct SMA Connector Interface: Secure SMA male connector provides reliable impedance-matched connection to R9M and R9M Lite modules without adapters or signal loss

Ideal for commercial installations

5V Dual Channel Relay Module with Optocoupler HC-SR501 PIR Sensor (Passive Infrared Sensor) + IR Proximity Sensor Adjustable detection range digital output```html 5V Dual Channel Relay Module with Optocoupler Control two high voltage AC DC loads independently from your Arduino, ESP32, Raspberry Pi, or any microcontroller with this reliable 5V Dual Channel Relay Module featuring built in optocoupler isolation. Ideal for home automation, IoT switching, and industrial control projects. Available now from The Engineer Store, Bengaluru. Fast shipping, 7 day warranty on manufacturing defects, expert technical