Waveshare Liquid Level Droplet Sensor Module, Flood Detection Module, Water Level Alarm Monitoring, Compatible with Arduino

$14.00

High Sensitivity Sound Sensor Module Microphone/Audio Detection Controller Switch

$2.98

High-Temperature Diffuse Reflection Photoelectric Switch UX-50R-N1 Through-Beam Sensor NPN 3-Wire Normally Open TX-40R-P1

$38.00

E3Z Photoelectric Switch Through-Beam and Diffuse Reflection E3Z-D61 E3Z-R61 E3Z-T61 Infrared Switch Sensor

$42.00

M12 Cylindrical Retro-Reflective Laser Sensor BJT12-20N Focused Type Contrast Infrared Photoelectric Switch Visible Light

$75.00

Carbon Dioxide Sensor 485 Temperature Humidity Greenhouse Concentration Monitoring High-Precision CO2 Transmitter Gas Detector

$46.80

Suenwu SX-11N1 Ultra-Slim Through-Beam Photoelectric Switch Micro Sensor SX-E13N2 Free Shipping SX-E13N1

$120.00

PulseSensor Pulse Heart Rate Sensor Monitoring Bio-Simulation Sensor Inductor Module

$7.00

Infrared Switch Counting Module 0-30CM Through-Beam Type Discrete Infrared Pair 50cm/2M Photoelectric Switch

$11.49

Background Suppression Photoelectric Switch Laser Sensor Adjustable Distance Red Light Diffuse Reflection Through-Beam Small Spot Sensor

$45.00

OMRON Original E3T-FT11/FT12/FT12/FT14 Ultra-Small Through-Beam Photoelectric Sensor

$190.00

Audio Sensor Decibel Detector Sound Sensor Module Outdoor Whistle Switch Analog Microphone Amplifier

$25.50