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"bluetooth transmitter"
12V 4 Channels Bluetooth Relay Module 4 Way Bluetooth Wireless Smart Relay Module Smart Home Phone APP Remote Control Switch
Limited time offer, ends 11/08
$22.11
Free Shipping
AJMRTC F233-01 4 Channel Infrared Tracking Sensor Module, Four-Way Line Tracking & Obstacle Avoidance Sensor for Smart Robot Car, Path Tracing Detector Module for Arduino DIY Robotics Project
Limited time offer, ends 11/25
$11.18
Free Shipping
AJMRTC 5Pcs Sound Detection Sensor Module, Voice Activated Sound Control Switch Module, Adjustable Sensitivity Sound Trigger Sensor for Arduino, Raspberry Pi, Smart DIY Projects
Limited time offer, ends 11/29
$17.38
Free Shipping
12V Dual Way Bluetooth Relay Module 12V 10A Wireless Smart Relay Module IoT Smart Home Phone APP Remote Control Switch
Limited time offer, ends 11/08
$16.73
Free Shipping
AJMRTC 20Pcs 5V Active Electromagnetic Buzzer, Continuous Beep Alarm Sounder Speaker, Integrated Active Buzzer Module for Circuit Prompt and Alarm Projects
Limited time offer, ends 11/29
$19.09
Free Shipping
AJMRTC 20Pcs TTP223 Capacitive Touch Sensor Module, Self-Lock / Jog Switch Mode Touch Button Module, High Sensitivity Touch Detector for Arduino ESP32 DIY Electronic Projects
Limited time offer, ends 11/29
$16.81
Free Shipping
AJMRTC 10Pcs TTP223B Capacitive Touch Sensor Module, Digital Capacitive Touch Switch Module, Single Channel Touch Button Detector Board for Arduino ESP32 Raspberry Pi DIY Smart Home Project
Limited time offer, ends 11/29
$21.09
Free Shipping
AJMRTC 5Pcs RCWL-0516 Microwave Radar Sensor Module, Doppler Human Motion Detector, 3.3V Digital Output, Penetrable Non-PIR Induction for Smart Light and Alarm Projects
Limited time offer, ends 11/29
$17.38
Free Shipping
AJMRTC 5Pcs Piezoelectric Vibration Sensor Module, Analog Ceramic Piezo Sensor for Vibration Shock Knock Detection, Signal Acquisition for Arduino STM32 Electronic DIY
Limited time offer, ends 11/29
$21.09
Free Shipping
AJMRTC 5Pcs 5V Heartbeat Sensor Module, Finger Pulse Heart Rate Detection Measuring Module for Arduino STM32 Bio-Signal Monitoring DIY Project
Limited time offer, ends 11/29
$15.39
Free Shipping
AJMRTC 5Pcs TCRT5000 Infrared Tracking Sensor Module, 5V Single Channel Line Tracing Module, Intelligent Car Infrared Line Tracking Probe for Robot DIY, Obstacle Avoidance and Path Detection
Limited time offer, ends 11/29
$19.38
Free Shipping
Infrared transmitting Module/Infrared Digital 2-Channel Infrared Receiving Sensor Module
Limited time offer, ends 11/08
AJMRTC TOF MINI Laser TimeofFlight Range Finder Sensor, UART Distance Measurement Module with OnBoard Controller, Mini LiDAR Unit for Arduino ESP32 Raspberry Pi Robot ObstacleAvoidance DIY Project
Limited time offer, ends 11/25
$32.79
Free Shipping
AJMRTC CLT Clap-Activated Sound Sensor Switch Kit, DIY Acoustic Control Module with Integrated PCB Board, Sound Trigger Switch Electronic Kit for Maker Learning and DIY Electronic Projects
Limited time offer, ends 11/25
$10.54
Free Shipping
AJMRTC MPR121 Capacitive Touch Sensor Module, I2C V12 Breakout Keyboard Module, 12 Channel Touch Detector Board, Compatible with Arduino ESP32 for Touch Button, Keyboard, Interactive DIY Control
Limited time offer, ends 11/25
$11.30
Free Shipping
AJMRTC 2Pcs Infrared Reflective Sensor Module, IR Photoelectric Reflectance Detector, Obstacle Avoidance Line Tracking Sensor for Arduino ESP32 STM32, Robot & Electronic DIY Projects
Limited time offer, ends 11/25
$21.18
Free Shipping
AJMRTC TTP223-BA6 Capacitive Touch Sensor Module, Single Point Touch Button Switch, Penetrable Isolation Touch Pad, TTP223 Capacitance Induction Touch Module for Arduino ESP32 STM32 Smart Home DIY
Limited time offer, ends 11/25
$10.63
Free Shipping
AJMRTC TTP223B Capacitive Touch Sensor Module, Digital TTP223 Touch Switch Module, Blue PCB Single Channel Capacitive Touch Detector for Arduino ESP32 STM32 Electronic DIY Projects
Limited time offer, ends 11/25
$10.99
Free Shipping
5V1A Wireless Power Transfer Module Wireless Charging Transmitter Receiver Inductive Coil Circuit Board Module Fun DIY Kit
Limited time offer, ends 11/08
$16.93
Free Shipping
AJMRTC 5PCS/LOT RCWL-0516 Microwave Radar Sensor Module, Human Body Induction Switch Intelligent Motion Detector, Non-contact Doppler Radar Breakout Board for Arduino Auto Light Security Project
Limited time offer, ends 11/25
$10.54
Free Shipping
AJMRTC CLT 5.8GHz Microwave Radar Sensor Module, Strong Anti-Jamming Motion Detector Trigger Switch, 6-9m Detection Distance DC 3.3-20V, for Smart Home Automation, Lighting Control DIY Projects
Limited time offer, ends 11/25
$11.90
Free Shipping
AJMRTC Microwave Radar Sensor Module, DC 5.5V-15V Power Supply Motion Detection Radar Sensing Board for T8 Semi-Aluminum Plastic Tube Light, LED Lighting Control & Automatic Sensor Projects
Limited time offer, ends 11/25
$10.54
Free Shipping
AJMRTC 1PC DC 3V-9V Sound Voice Activated Sensor Module, Intelligent Auto On/Off Delay Sound Control Switch, Microphone Sound Trigger Board for DIY Electronic Circuit Projects
Limited time offer, ends 11/25
$10.85
Free Shipping
5V Multi-Mode Time Delay Relay Module, Adjustable Delay Timer, for Automation Home Appliances DIY Projects
Limited time offer, ends 11/08
$16.46
Free Shipping
5PCS RT Split Ultrasonic Transducer Sensor Ultrasonic Sensor Probe Diameter 16mm for Motion Detection
Limited time offer, ends 11/09
$11.99
Free Shipping
AJMRTC TOF MINI Laser Range Sensor Module, Builtin Controller & Ranging Algorithm, TimeofFlight (TOF) Technology HighPrecision Distance Measuring Unit for Robot Obstacle Avoidance & DIY Embedded
Limited time offer, ends 11/25
$31.55
Free Shipping
20pcs TMB12A03 3V Integrated Active Electromagnetic Buzzer 12x9.5mm High Sensitivity Low Power
Limited time offer, ends 11/09
$11.99
Free Shipping