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2x with HW flow control
An LED indicator that indicates multiple operating conditions
DIY Makers & Hobbyists: Perfect for custom gadgets
Understanding the HC-SR04 ultrasonic sensor working and pinout is simple
Wireless control systems
12mm Reed Switch/Sensor Soil Moisture Sensor 2x with HW flow control12mm Reed Switch Sensor The 12mm reed switch sensor is an electrical switch operated by an applied magnetic field. The reed switch contains a pair (or more) of magnetizable, flexible, metal reeds whose end portions are separated by a small gap when the switch is open. The reeds are hermetically sealed in opposite ends of a tubular glass envelope. When the device is exposed to a magnetic field, the two ferrous pins inside the switch pull together and
US$ 109.00
US$ 29.95
US$ 20.25