Spektrum Telemetry question need info
 

Ok guys I have a spektrum question. I want to use the telemetry system for boats.

Do they make an all in one unit? What I mean by all in one is that I use the little module with only temp and rpm sensors? The unit will have its own separate battery. Will it transmit the telemetry to the handheld unit with out using a spektrum radio? Any info would really be appreciated.

I was looking at something like this http://www.ebay.com/itm/160635826615...84.m1438.l2649

I see in this picture there is a small module will that transmit to the handheld unit?

Thank you so much.