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The manufacturer bills the Model RH as the only economical rotary paddle bin level indicator incorporating locally visible high intensity LED indication as standard. That alarm status feature combines with four shaft bearing design, DPDT relay output that is fail-safe on power failure, plus automatic motor shutoff. The RH/RHX models evolve rotary paddle technology that has been used for nearly 80 years in powder and bulk solids measurement.   — Blue Level Technologies, 888/616-3835,