Systems, methods and devices for paired training include timing controls so that training and neural stimulation can be provided simultaneously. In one aspect, a tantalum layer may be deposited on a surface of a wafer substrate using an ion-induced atomic layer deposition process with a tantalum precursor. In one embodiment, the wireless remote control apparatus can use the status signal to determine a distance between the movable barrier operator and the wireless remote control apparatus. A method for improving color uniformity of the device is also provided.