As long as you take them apart and look at the model of the main control chip, as long as the model is the same, it can be universal. In fact, any electronic device can be common as long as the number is the same, but their software may be different. For example, there's a triad number 1815 on the computer motherboard there's a triad number 1815 on the radio there's a triad number 1815 on the cruise missile and they're all generic.