These 2-1/4" tachometers were designed to offer aviation styling and performance for all types of aircraft. These tachs have high resolution and easy to read displays. The analog model has a 270° sweep which provides great resolution in both the 3500 and 7000 ranges. The digital model has a bright LED display. Separate power source required. Installation is simple. If using mag pickup 1A9-1 or 1A9-2, remove vent screw-cap from magneto and screw in one of this mag sensors. Connect power to the tach and plug in DB-9 connector into the tach. If using 1A3-4 sender that goes into mechanical port, just install it there, connect 4 pin connector to the sender and DB-9 connector to the tach and connect power leads to the aircraft fuse box. Instructions included.
(to replace mechanical tachs)
Current: 80 milliamps Size: 2.25" round x 2.75"deep
Magnetic pickup (6 ft. cable length) included with P/N's 10-02141 and 10-02140 (T1A9).
6 ft. harness, sending unit, and .156 diameter tang adapter included with P/N 10-00083 (1A3-4).
The UMA 3500 2-1/4 Analog Tachometer does not have internal lighting.
No, these instruments, part numbers 10-00083, 10-02140, and 10-02141, are not TSO'd for certified aircraft.
No, this tach will not work on a Rotax 912. The range of this tach does not even reach the speed of the Rotax engine. I think what you're asking about is the tiny tach, part number 10-04182.
No. This Tach is Non TSO'd and can not be used in a certified aircraft.
Per the installation manual the supply voltage is +10 to +28 Volts DC, Hourmeter output +12V @ 20ma max.