DEUTA CHM Crash Hardened Memory Units complete the product line of REDBOX Multifunction Recorders with protected travel data recorder units. The special design of the housing makes it ideally suited to withstand the extreme mechanical and thermal conditions experienced in railway transportation. Extremely durable and versatile the CHM can be mounted as a stand-alone device with an angle fastening set or alternatively can be mounted in the 19” plug-in module. Travel data is read out via the USB interface 1.1 or 2.0, or via the read-out interface.