• Simpler operation more suitable for non technical users, that shows the most important  battery data for everyday use.  
• Lower cost: Retail cost of TriMetric will be  less than $200 including the one required shunt.  The minimum (but often very adequate) PentaMetric system will be less than $300. plus additionally  you will  need up to three shunts  which are about $25 each. 
• Bright, larger LED display that is easier to read at a glance. The PentaMetric has a  two line, 16 character LCD display containing more information,  but smaller  digit size.  
• Choice of two sizes: a smaller one with enclosure, and a larger one that fits in a standard “double gang” electrical box.  These two also have two different label color choices.

More information on the TriMetric system