Warranty: 1 years Certification: Reach Customized support: OEM Place of Origin: Anhui, China Brand Name: huanrui Model Number: E31 power consumption: 2W Setting range: 5-35 (can be adjusted to 5-90) external limitation: 5-60(Factory setting:35) Sensor: NTC internal /external sensor Switch differential: 0.5-10 adjustable (Factory setting:-1---1) Ambient temperature: -5--50 Housing protection: IP20 Housing material: anti-flammable PC