Dimensions

1.85" W x 2.40" L x 0.95" H

Weight (electronics module)

1.3 Oz.

Pin Numbers

1: +12V, 2: Gnd, 3: Tach out, 4: Tach Trigger In

Power Input Requirements

12-14.4 DcV switched input (< 50mA)

Input Signal to Boost Module

Minimum 3V amplitude. Internal pull-up resistor in TachMatch

Output Signal to Tachometer

Voltage boost signal with frequency proportional to input RPM. but at higher amplitude.