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× Relay Module, 2 Channels, 5V 10A Opto Isolated, Quality Relays $5.90
 $5.90
× NRF24L01+ 2.4GHz Wireless Transceiver Module with PCB Antenna $3.90
 $3.90
× ESP32-WROVER-I, 4MB, 8MB RAM, WiFi & Bluetooth, U.FL Connector $8.90
 $8.90
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Subtotal$18.70
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Total$22.70
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