LW2-6BL hardwired trackers are usually used for tracking powered assets and vehicles. It has more inputs in addition to the basic model TLW2-2BL. It also has ignition detection and output for relay/buzzer/siren. When working with BLE sensors it can monitor the temperature, humidity, door status, etc. It’s a model you go with when you have a more complexed needs in fleet management, logistics, cold chain, etc.