A method of testing one or more electrochromic devices and/or wiring during commissioning is disclosed. The method can include providing one or more electrochromic devices and at least one controller. The controller can be electrically connected to the one or more electrochromic devices. The method can further include setting a commissioning voltage for the one or more electrochromic devices. The commissioning voltage can be no more than 2 V. The method can further include sending from the at least one controller, the commissioning voltage to each of the one or more electrochromic devices to change the one or more electrochromic devices from a first transmission state to a second transmission state.