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*Communication storage：100 measurement series
atmospheric appearance design and ergonomic design of a perfect combination
ZD91 Concrete Rebound Hammer: Non-destructive testing of ordinary concrete compressive strength rebound method for structural engineering
or ±(5%+5dgt) at(30Hz~2000Hz)
Graigar Smartgen HSM300 Synchronous Module for Genset Automatic Parallel Voltage Testers *Communication storage：100 measurement seriesBrand: Graigar Color: Black&green Features: HSM300 Synchronous Module is special design for genset automatic parallel. On the basis of the parameters, the module automatically tests the conditions of paralleling (pressure difference, frequency difference and phase) and send parallel signal when the conditions meet parallel requirements. HSM300 Synchronous Module is used for the occasions that gens synchronize to bus. The module is brief to operate,
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