... 10 years, the internal battery life is 7 year SH-8008 WaterProof Digital LCD Generator Hour Meter8-digit LCD display ... in Engineering machinery, construction vehicles, agricultural machinery, generators, air compressors, pumps, traffic, cranes, elevators, garment machinery, printing machinery, and all ... -230V Terminal Method1.V+2.V- Mounting Size: SH-8008 WaterProof Digital LCD Generator Hour Meter