... 3.Hight quality,test approved 4.OEM,ODM service 5. 1 year warranty Tech Spec :Operating voltage: DC12VOperating Current: 12mAPower ... -390Mhz390-450MHzOperating temperature: -20 °C ~ +50 °C Operating Instructions: 1, Clear : Pressing Arming key and disarming key at the same time ... keys are the same operation.3, Resume : If you clear code of duplicating remote control incautiously , you can press starting ...