Temperature levels within racks, server room or datacentre environment are one of the most important environmental factors to regularly monitor. Sudden room temperature rises can indicate the failure of a critical infrastructure system such as an air conditioner and lead to server failures and worst case a fire starting. Hot-spots within server racks can literally ‘cook’ the electronics and batteries within in-rack UPS systems. Low temperatures can be a sign that the cooling system operating parameters are set too low, leading to excess energy usage and higher operating costs.