mmWave-C4001 24Ghz Human Presence Detection Sensor

The DFRobot C4001 24GHz Millimeter-Wave FMCW Radar is the perfect solution for human presence detection. It features long-range measurement, high accuracy, advanced FMCW technology, durable build, easy integration, and strong anti-interference capabilities. Made with robust materials, this radar sensor ensures reliable performance in harsh conditions. Its state-of-the-art FMCW modulation provides superior accuracy, making it ideal for motion detection and proximity sensing. The compact design and versatile installation options simplify setup and enhance project capabilities. The C4001 radar sensor measures up to 25 meters and is suitable for real-time human presence detection. Available in various sizes.

• Automatic induction: to enter the sensing range
• Ultra-small size.
• Repeatable trigger
• Wide operating voltage range
• Micropower: quiescent current <50
• Output high signal: easy docking and all kinds of circuits.

• Operating Supply Voltage: 5 volt
• Operating frequency: 38 KHz
• Operating current: 5mA
• Mounting: Pin hole
• Pin Count: 3

• Separate jumper adjustments are provided for changing the response time of the pressed key: 60mS fast mode or 160mS in Low power.
• TTP224 4-way switch digital touch capacitive touch sensor module
• 4 keyboard TTP224 capacitive touch sensor IC
• Onboard 4-level status indicator
• TTP 224 4 Channel Digital Touch Sensor is compatible with all Arduino’s board.
• The board finds applications in HMI(Human-machine Interface), mechanical Button key replacement.

• The input voltage of this module is 2Volts – 5.5 VDC.
• The response time max is ~ 60mS in fast mode, ~220mS at low power mode @VDD=3V.
• Sensitivity can adjust by the capacitance(0~50pF).
• Stable touching detection of the human body for replacing traditional direct switch key.
• Provides direct mode toggle mode by pad option (TOG pin).
• After power-on have about 0.5sec stable-time, during the time do not touch the keypad, and the function is disabled.
• Auto calibration and Re-calibration period is about 4.0 sec when the key has not been touched.

• Power supply voltage(VCC): 2.0, 3, 5.5 V.
• Output high VOH: 0.8VCC V
• Output low VOL: 0.3VCC V
• Response time (touch mode) : 60 mS
• Response time (low power mode) : 220 mS
• Can replace the traditional touch of a button
• Four M2 screws positioning holes for easy installation

• The KY-036 Touch Sensor is a single-channel signal output.
• This metal touch sensor uses low-level output signal for human body touch sensor alarm.
• The KY-036  metal sensor has an adjustable sensitivity.
• This touch sensor is integrated with LM393 chip and working voltage.