The RAM® Temp-Right™ Dock Heating Module for Zebra ET4x tablet docks (RAM-DOCK-HEATER1-DU) is a self-regulating heater module available as an add-on accessory when your ET4x docking system is mounted in extremely cold environments. When installed to the dock and connected to a power source, the integrated thermistor detects when temperatures reach below 32-degrees fahrenheit, automatically activates the heater, and forces hot air throughout the back of the tablet via a 12-VDC Axial cooling fan. The heater will bring the device up to safe operating temperatures and then automatically turns off. In addition, a built-in safety plunger prevents the heater from activating when the device is undocked. Once the device is docked, it presses on the safety plunger which will activate the functionalities of the Temp-Right™. This add-on accessory was built to keep devices operable specifically in cold environments for transportation & logistics and cold storage warehousing use cases.