Best Review of Nasa Battery BM1 Monitor -12VDC - Dark GreyWith so many on offer right now, it is wise to have a brand you can recognise. The Nasa Battery BM1 Monitor -12VDC - Dark Grey is certainly that and will be a great purchase. For this price, the Nasa Battery BM1 Monitor -12VDC - Dark Grey comes highly recommended and is always a popular choice with lots of people.
- Standard 110mm square Clipper case. High contrast LCD, backlit for night viewing.
- Minimum voltage visual alarm
- Simple operation