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"bluetooth transmitter"
DTECH Wireless Module TPUNB Data Converter RS232 to Lora DTU Wireless Serial Transceiver
Limited time offer, ends 11/14
$87.79
Free Shipping
AJMRTC 10Pcs MAX3232 RS232 to TTL Serial Converter Module, SAMIORE ROBOT Mini RS232 TTL Level Conversion Board, Serial Port Communication Module for MCU Electronic DIY Projects
Limited time offer, ends 11/25
$11.48
Free Shipping
AJMRTC Independent DualChannel Analog Signal Conversion Module, HighStability SmallSize Signal Converter Board for Household Equipment, Industrial Control and IoT System Hardware Projects
Limited time offer, ends 11/25
$23.85
Free Shipping
AJMRTC TTL to RS232 Serial Port Module, Level Conversion Serial Adapter Board, TTLRS232 Signal Level Transceiver Module for MCU Debugging Industrial Equipment Serial Communication Projects
Limited time offer, ends 11/25
$19.26
Free Shipping
AJMRTC CLT TTL to RS485 Automatic Converter Module, 3.3V / 5V Level Adapter, Automatic Flow Control Transceiver Board for AVR MCU Serial Communication and Electronic DIY Projects
Limited time offer, ends 11/25
$10.85
Free Shipping