... selected with the imported integrated circuits such as power metering, clock, storing, etc., and adopted with the SMT surface mounting and ... , etc can be recorded and read 8. High-precision time clock, with the temperature compensation, to ensure the daily timing error ... : ≤1W, 5VA Current loop: ≤1VA (1b) Life cycle: >15 years Clock error: ≤0.5 s/d