Water Level Sensor, 4-20mA Liquid Level Sensor with Waterproof 33m Cable and 0-5m Measuring Range, Heavy Duty Stainless Steel Liquid Level Transmitter Submersible Level Sensor for Water Tank

Water Level Sensor, 4-20mA Liquid Level Sensor with Waterproof 33m Cable and 0-5m Measuring Range, Heavy Duty Stainless Steel Liquid Level Transmitter Submersible Level Sensor for Water Tank

AEDIKO 4pcs DC 5V Relay Module 1 Channel Relay Switch Relay Board with Optocoupler Isolation Support High or Low Level Trigger

EDGELEC 120pcs Breadboard Jumper Wires 10cm 15cm 20cm 30cm 40cm 50cm 100cm Optional Arduino Wire Dupont Cable Assorted Kit Male to Female Male to Male Female to Female Multicolored Ribbon Cables