no noise, no interference, long-life, anti-jamming, high precision temperature control, ... temperature controller is designed and developed the patented product, with no noise, no interference, long-life, anti-jamming, high precision temperature control, ... following certification: 1.The State Intellectual Property Office patent.Patent No."ZL200620053720.5". 2.The EU ROHS. ROHS number: "SZHJ072500". ...