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4 Channel 5V Relay Board Raspberry Pi 4 Model B 8 GB RAM Irrigation and Agricultural Automation: Soil Irrigation and Agricultural Automation: Soil moisture depth sensing and rainwater harvesting tank monitoring for precision irrigation systems and smart farming applications Network status LED Operating Temperature 35 degreesC to +75 degreesC Compatibility Arduino Project Ideas Per Channel Status LEDs: Instantly see which relays are active without external test equipment
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