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"cable testers"
USB Serial Port Control Relay Module Sturdy Durable Lightweight USB Relay Module USB Intelligent Control Switch Overcurrent Protection Intelligent Command Control Switch Intelligent Home
Limited time offer, ends 11/08
$16.43
Free Shipping
000 JESSINIE 5Pcs DHT11 Digital Temperature and Humidity Sensor Module DHT11 Temperature and Humidity Test Probe
Limited time offer, ends 11/09
$11.99
Free Shipping
1pc Grove - TDS Sensor/Meter for Water Quality (Total Dissolved Solids)
Limited time offer, ends 11/08
$73.98
Free Shipping
5Pcs Metal Detector Module 5V 1CM Non-Contact Metal Sensor ModuleNon-Contact Metal Induction Detection Module Board
Limited time offer, ends 11/08
$18.72
Free Shipping
2 Pack 5V 2-Channel Relay Module with Optocoupler, Red Expansion Board Supports High/Low Level Trigger 2-Way OPTO
Limited time offer, ends 11/08
3Pcs 1Channel AC Optocoupler Module 220V Voltage Detect Optocoupler Isolation Microcontroller TTL Level 3V-5V
Limited time offer, ends 11/08
$16.73
Free Shipping
5Pcs 1 Channel DC 3V/3.3V Power Relay Module 3V Relay Switch Module with Optocoupler Relay Module Isolated Drive Control Board 10A 250VAC 10A 30VDC Control Development Board
Limited time offer, ends 11/08
$16.73
Free Shipping
5V Photosensitive Relay Module with LDR Photoresistor Sensor for Light Detection, Smart Home Automation DIY Projects
Limited time offer, ends 11/08
$15.89
Free Shipping
1pc XIAO 2-Channel Wi-Fi AC Energy Meter &2pcs Non-invasive AC Current Transformer 100A-50mA
Limited time offer, ends 11/08
$118.98
Free Shipping