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Reliable & Repeatable: Consistent readings after proper calibration with pH 4
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
and light electric vehicles
critical for safe long-range flights where you need accurate return-to-home calculations
and connectors onto custom or prototype PCBs
Vending Machine Coin Acceptor RC522 RFID 13.56MHZ Reader Writer Module Reliable & Repeatable: Consistent readings```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
