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Perfect for privacy-sensitive and network-free environments
3V - 5V DC Output Signal Analog (pulse waveform) Light Source Green LED (typically 520-560 nm wavelength) Detector Ambient light photo sensor with noise rejection circuit Current Consumption ~4 mA at 5V Measurement Method Reflective PPG (fingertip or earlobe placement) Output Connector 3-pin header (Signal
Professional-grade mini electric drill set from The Engineer Store
and smoke - making it ideal for air quality monitoring systems
and connectors onto custom or prototype PCBs
Vending Machine Coin Acceptor RC522 RFID 13.56MHZ Reader Writer Module Perfect for privacy-sensitive and network-free```html Vending Machine Coin Acceptor Build coin operated machines with this reliable multi coin acceptor module from The Engineer Store, Bengaluru. Programmable to recognize different coin denominations, this acceptor outputs pulse signals for easy integration with Arduino, Raspberry Pi, or any microcontroller. Ideal for vending machines, arcade cabinets, coin operated services, and automated payment systems. Fast shipping across India with full
