Dfrobot Gravity Digital Line Following Sensor for Arduino

High precision sensor module designed to add effective line tracking functionality to Arduino robotics projects; used as a navigation aid it can guide your robot by identifying white from black quickly and accurately, via TTL signal. TTL Output (LOW for Black, HIGH for White) Operating current: 20mA @ 5V Operating temperature range: 0°C to 50°C Standard assembly structure (two 3mm mounting holes with multiple of 5mm as interval) Digital interface Operating Voltage: 3.3-5.5V DC Board size: 28x10mm