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We sell 100% brand new and high quality products. You can get what you want here at a competitive price! Don't hesitate, just buy it!Description: - Metal Touch Interface module and number 13 with LED build a simple circuit to produce a touch cue lights . - Use number 13 interface LED, make metal touch sensor connect digital three interfaces. when a metal touch sensor senses a key signal, LED lights, otherwise off. - Working voltage: for DC 5V - Single channel signal output. - Low level output signal used for human body touch sensor alarm - Adjustable sensitivity. - With fixed bolt hole for easy installation.Specification: - Size: 42 x 15mm/1.6 x 0.6inchPackage Includes:1 Piece KY-036 Human Body Touch Sensor Module