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UL Certification required for low power electronic device

UL Certification required for low power electronic device

We are designing a wall mounted electronic data collection device (simple LCD display and keypad) with an external power supply.  I would consider the entire device a low voltage device.  I understand in some other countries outside of the US, an electrical safety rating may be required.  We are moving forward with FCC certification and we are considering a UL certification.  Initially, I thought from a liability standpoint that we would need to UL certification, but I haven't seen many other low voltage  products, other than external power supplies with a UL certification.  Is this a common requirement for electronic devices or this a customer based requirement?  For example, is there a vertical that specifically requires a UL certification in addition to the FCC?   If you know of a previous thread here in the forums describing this, please let me know....thanks..

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