The Labcold Sparkfree range is engineered to store flammable materials safely with no sources of ignition inside the chambers. Anything that could cause a spark is located outside of the chamber. For extra security all sparkfree models are fitted with a built in lock and digital temperature display. The display features high and low audio and visual temperature alarms as standard in addition to a door open alarm. The controller also records the minimum and maximum temperature since the last reset.