A dual output subsea sensor connection assembly for connecting at least two subsea cables (301, 302) to a dual output subsea sensor, the dual output subsea sensor being adapted to be coupled to different locations on a subsea hydrocarbon production or processing facility to measure pressure or temperature; wherein the connection assembly comprises: - an adapter piece configured to be mounted to a rear part of the subsea sensor, - a sensor port in the adapter piece through which at least a first sensor connection and a second sensor connection are led to the dual output subsea sensor, - a first port in the adapter piece for providing a connection to a first subsea cable of the subsea cables (301, 302), - a second port in the adapter piece for providing a connection to a second subsea cable of the subsea cables (301, 302), - a first penetrator arranged in the first port, wherein the first penetrator provides a liquid tight seal between an interior space of the adapter piece and a duct connectable to the first port, and wherein the first penetrator leads the first sensor connection through the first port, and - a second penetrator arranged in the second port, wherein the second penetrator provides a liquid tight seal between the interior space of the adapter piece and a duct connectable to the second port, and wherein the second penetrator leads the second sensor connection through the second port, wherein the sealing provided by the first penetrator and by the second penetrator is such that there is no fluid communication through the adapter piece between the duct connectable to the first port in the adapter piece and the duct connectable to the second port in the adapter piece; and, wherein the sensor port comprises a mechanical interface for mounting the adapter piece to a mounting flange or sensor housing of the subsea sensor, whereby a fluid tight and pressure resistive connection between the mounting flange or sensor housing and the adapter piece is provided. - an adapter piece configured to be mounted to a rear part of the subsea sensor, - a sensor port in the adapter piece through which at least a first sensor connection and a second sensor connection are led to the dual output subsea sensor, - a first port in the adapter piece for providing a connection to a first subsea cable of the subsea cables (301, 302), - a second port in the adapter piece for providing a connection to a second subsea cable of the subsea cables (301, 302), - a first penetrator arranged in the first port, wherein the first penetrator provides a liquid tight seal between an interior space of the adapter piece and a duct connectable to the first port, and wherein the first penetrator leads the first sensor connection through the first port, and - a second penetrator arranged in the second port, wherein the second penetrator provides a liquid tight seal between the interior space of the adapter piece and a duct connectable to the second port, and wherein the second penetrator leads the second sensor connection through the second port, wherein the sealing provided by the first penetrator and by the second penetrator is such that there is no fluid communication through the adapter piece between the duct connectable to the first port in the adapter piece and the duct connectable to the second port in the adapter piece; and, wherein the sensor port comprises a mechanical interface for mounting the adapter piece to a mounting flange or sensor housing of the subsea sensor, whereby a fluid tight and pressure resistive connection between the mounting flange or sensor housing and the adapter piece is provided.