6297373886251008 Businesspro Mall Elecfreaks Octopus 2 Channel Tracking Module Octopus 2 Channel Tracking Module has integrated two groups of reflective infrared pair diode, which can be used to identify black lines. This module is usually Product #: businesspro-Elecfreaks Octopus 2 Channel Tracking Module 2022-09-21 Regular price: $HKD$72.0 Available from: Businesspro MallIn stock