The OKY3420-6 is an industrial-grade level-sensing device manufactured by OKYSTAR. It features a capacitive touch sensor based on the MPR121QR2 chip and has a single channel with a supply voltage of 2.5 to 3.6 VDC. It is designed for applications such as industrial automation, alarm systems, security systems, medical equipment, and consumer electronics. The device is highly reliable and has an integrated on-chip temperature grade. It also features a self-calibration feature that ensures accurate results even under fluctuating environmental conditions. The device is also RoHS compliant and meets all requirements for reliability and electromagnetic compatibility.