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Bluetooth Relay Board 8-Channel 30-Amp with UXP Port: Relay Pros
Industrial High-Power Relay Controller 16-Channel + UXP Expansion Port at MG Super Labs India
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RS-232 4-Channel Relay Controller Board with General Purpose SPDT Relays Pro Series Relay Control Control All or Individual Relays with Two-Way
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Ethernet Relay 32-Channel 5-Amp DPDT ProXR: Relay Pros
RS232 Relay Board, The ZADR85DPDTProXR_ZRS RS232 Relay Board will allow you to connect the board to the DB9 port on your computer or other device.,
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