SAFTY
The SR series has been carefully tested and approved by various certifying institutions. The latest approval was done by Underwriters Laboratory (UL), which is one of the most credible institutions in the U.S. for product safety. In addition to UL approval, the SR models have also been approved by multiple European laboratories (earning the CE mark for excellence in product safety and design), and a Department of Environmental Quality (DEQ) approval in the state of Idaho. http://www.deq.state.id.us The SR is safe when installed and operated in accordance with the owner's manual.