The KTH1601SL-TO3 is a TO-92S RoHS-compliant magnetic sensor made by CONNTEK. It is based on Hall-effect technology and detects the presence of a magnetic field. It is designed to sense the slightest changes in a magnetic field, providing a precise signal in response. The KTH1601SL-TO3 features a low supply voltage, high output current, low standby current, and a wide operating temperature range, making it suitable for a variety of applications. It is also RoHS-compliant, making it an environmentally-friendly, safe, and reliable choice.