Specification AgeRangeDescription : adult Brand : Generic BulletPoint : MPR121 Breakout V12 Capacitive Touch Sensor Controller Module I2C Interface keyboard Development Board For Arduino BulletPoint1 : *The proximity switch, also known as non-contact proximity switch, is an ideal electronic switching sensor. BulletPoint2 : *Proximity switch is a kind of on-off sensor (i.e., non-contact switch). It has the features 'travel switch and microswitch, as well as sensing performance. It has reliable action, stable performance, fast frequency response, long application BulletPoint3 : * When the approach sensor switch is close to the target object, it will send out a control signal, with high sensitivity, fast response and stable performance. BulletPoint4 : *Our proximity switch is a component suitable for detection, control and non-contact switch. Widely used in machine, paper making, light industry for limiting station, orientation taking count, speeding trial etc. BulletPoint5 : *In comparison with general mechanical stroke switches, the products have many advantages in these aspects, such as general stroke control, positioning accuracy, operating frequency, durability, convenience of installation and adjustment, and adaptability to har BulletPoint6 : NC LJC12A3-5-Z/AX BulletPoint7 : NO+NC BulletPoint8 : PNP NO LJC12A3-5-Z/POR BulletPoint9 : NC LJC12A3-5-Z/AY Color : One Color Department : Unisex Adult ExternallyAssignedProductIdentifier : 7429668972147 ItemName : MPR121 Breakout V12 Capacitive Touch Sensor Controller Module I2C Interface Keyboard Development Board for Arduino ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : capacitive-proximity-sensors Manufacturer : Generic ModelName : NURII ModelNumber : NURII NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : WEIx_WIJDNS_20082 ProductDescription : The MPR121 chip is powerful and can be used for touch capacitance detection, driving LEDs, etc. It can reduce power consumption to 8yA under low-speed scanning and can handle up to 12 independent touchpads. It supports I2C and can be connected with almost any microcontroller. You can use the ADDR pin to select one of four addresses. There are a total of 48 capacitive touchpads on an I2C2 line bus. Using this chip is much easier than capacitive sensing using analog inputs and can be configured for sensitivity. Parameter: Working voltage: 2.5V-3.6VDC Sampling frequency: When the sampling interval is 16m2s, the power supply current is 29μA, and the stop mode current is 3μA Output interface: 12 capacitive sensing inputs Input interface: 8 inputs for LED driver and GPIO Complete touch detection: auto-configuration of each sensor input Touch / release threshold and debounce for touch detection I2C interface with interrupt output Operating temperature range: -40 ° C to + 85 ° Size: 30.5 * 20.6mm