Ex-Or LightSpot HD Quicklink Bus Sensor is a unique intelligent solution that is easily to create a simple small network of up to four sensors. Each sensor can act independently or as an integral part of the network. Bus sensors are linked with just two low voltage connections. QuickLink networks improve the intelligence of your system as the data on occupancy and light levels can be shared across the sensors. Applications include corridor linking, ensuring you will always walk into an appropriately lit corridor.