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Which of the following statements about ECC800 is incorrect?
- A . ECC800 can realize SMS alarm function
B. ECC800 can realize the function of voice alarm
C. ECC800 is available with 3G/4G function and without 3G/4G function
D. ECC800 without 3G/4G function cannot be upgraded to ECC800 with 3G/4G function by adding a SIM card slot
E. ECC800 supports email alarm function
Suggested Answer: B
Posted : 10/01/2023 8:53 am