One year warranty   There are eight examination to ARL-HID.   (1) High/low temperature exam.   (2) IEC 68-2-6 shaking exam.   (3) DIN antisepticise exam.   (4) EN 60529 waterproof and dustproof exam.   (5) IEC anit-impulse exam.   (6) Sudden high/low voltage exam.   (7) Disconnection circuit exam.   (8) EMC CISPR 22 anti electromagnetic wave interfere exam.