If you are searching an ultrasonic ranging module, the HC-SR04 is good choice: Its stable performance and high ranging accuracy make it a popular module in electronic market. It's cheaper than an IR range finder with similar range accurancy and distance.
This is a normally closed G1/4 12VDC electric solenoid valves with barbed inlet and outlet ports, great for projects involving low viscosity fluid control. You can find it ubiquitous on applications like automatic faucets, foot operated faucets, drinking fountains etc.
Module laser rouge de classe IIIa affichant un point rouge. Au-delà de 3 mètres, la luminosité du point rouge diminue.
Output Power: Min 2.5mW, Typical 3.0mW, Max 5.0mW
Working current: Min 10mA, Typical 20mA, Max 25mA
Working voltage: Min 2.3VDC, Typical 4.5VDC, Max 8.0VDC
Working Temperature: Min -15C, Typical 25C, Max 35C
It's a small breakout board for the ENC28J60 Ethernet chip. Contains all the necessary hardware to implement an Ethernet interface including the isolation transformer and LINK/STATUS and power LEDs. SPI interface makes this one of the easiest 10Base-T ICs yet. It's 3.3V with 8KB buffer.
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