A system can include one or more sensors, one or more non-light emitting, variable transmission devices, and a processor coupled to the one or more non-light emitting, variable transmission devices and the one or more sensors. The processor can be configured to receive a sensor failure signal from the one or more sensors. The sensor failure signal can indicate that the one or more sensors are not working. The processor can be further configured to adjust one or more control algorithms used to control the one or more non-light emitting, variable transmission devices based on the received sensor failure signal. The processor can be further configured to send a first command to the one or more non-light emitting, variable transmission devices to change a transmission state of all of the one or more non-light emitting, variable transmission devices based on the received sensor failure signal to a sensor failure transmission state.