An apparatus for separation or synthesis of process substances is configured with at least two cell stacks, within each of which there is arranged at least one large-area layer for the separation or synthesis and passages are formed for feeding and discharging at least one process substance to or from the at least one layer. The steering wheel lock apparatus includes a lock pin, which engages a steering wheel, a motor, which moves the lock pin, and a control circuit, which controls the motor. The projector is configured to project an image composed of visible light in one or more ranges of wavelengths. The transmitter further includes a control circuit with an input for a single-bit control line for adjusting the bias to produce different swing amplitudes according to a control indicator inputted from the control line. A polymer composite material of the present invention includes: a polymer matrix including a thermoplastic aromatic polymer having both an ester bond and an ether bond; and metal oxide particles dispersed in the polymer matrix. , a Noack weight loss of 4 to 9%, a viscosity index of 130 to 145, and a pour point of 60 C.