The LSU49-5V is an analog controller for a standard Bosch LSU wideband sensor to give a signal between 0 and 5V proportional to richness.
It features a very small size and no housing: the electronics are under the boot (Raychem 202K132) on the rear of the connector.
The same boot is filled with resin to obtain a better mechanical strength and protection against moisture. Its implementation has resulted in the connection of four wires. The choice of connector is at the customer’s convenience.
Requires Bosch LSU 4.9 wideband sensor (sold separately).