SB2 Dual Sender Buffer The SB2 sender buffer connects to your existing 10 to 180 ohm or 240 to 33 ohm single station sender (oil pressure, water temperature, fuel, etc.) and buffers the sender so you can connect a CruzPro digital gauge and still retain your existing analog gauge. The SB2 contains two complete sender buffers which can buffer two separate senders (for example, one oil pressure sender and one engine temperatue sender).
Each of the two sender buffers in the SB2 has a small adjustment potentiometer that is used to make your analog gauge read correctly. Please note that while the CruzPro digital gauge will work at its optimal accuracy, the sender buffer does not improve the accuracy of your existing analog gauge.
The sender buffer is powered by 12 or 24VDC and draws less than 0.005 amps.
SB2 Connection Diagram